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#1 Re: Help Me ! » *NEED Help with STATS* » 2016-02-16 05:38:12
i figured it out. It was 0.0010. Thanks for All your help.
#2 Re: Help Me ! » *NEED Help with STATS* » 2016-02-16 01:04:27
I put it in the T184. Have I done something very wrong?
#3 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 14:46:52
*****Trying to get this figured out so I can turn this stuff in******************
*****IS THIS CORRECT********????
I am getting
A. H0: μ<21.1 mg
H1: μ≥21.1 mg
T= -3.479
P= 9.6935
p value 9.6935 > 0.05 so we
A. Fail to reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
AND....
B. The results do not suggest that the filters are effective.
************CORRECT OR NO?**************
#4
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
A simple random sample of 25 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 18.4mg and a standard deviation of 3.88 mg. Use a 0.05 significance level to test the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg, which is the mean for unfiltered king size cigarettes. What do the results suggest, if anything, about the effectiveness of the filters?
What are the hypotheses?
A. H0: μ<21.1 mg
H1: μ≥21.1 mg
B. H0: μ=21.1 mg
H1: u≥21.1 mg
C. H0: μ=21.1 mg
H1: μ<21.1 mg
D. H0: μ>21.1 mg
H1: μ<21.1 mg
Identify the test statistic.
t =________ (Round to three decimal places as needed.)
Identify the P-value.
The P-value is ________.(Round to four decimal places as needed.)
State the final conclusion that addresses the original claim. Choose the correct answer below.
A. Fail to reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
B. Reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
C. Fail to reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1mg.
D. Reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
A_________B___________C__________ OR D_____________
What do the results suggest, if anything, about the effectiveness of the filters?
A. The results suggest that the filtered cigarettes have the same tar content as unfiltered king size cigarettes.
B. The results do not suggest that the filters are effective.
C. The results suggest that the filters increase the tar content.
D. The results suggest that the filters are effective.
E. The results are inconclusive because the sample size is less than 30.
A_________B_________C___________D__________ OR E____________
#4 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 11:32:00
can you help me with #2 and #4.....Below is what I got for #2.
for #2 I got
p= 0.1835
critical values -1.645, 1.645
IS THIS CORRECT??
#4 I GOT
T= -3.479
P-value i am confused as to if if the answer is 9.6935 or 0.00097
Thanks!
#5 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 07:47:08
Have you been able to work on #4 also?
THANKS
#6 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 06:27:00
If you can help me with the last part of this question with the "is not" or "is" along with
#2 and #4 I think I will be good.
for #2 I got
p= 0.1835
critical values -1.645, 1.645
#7 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 05:31:00
IS NOT _________ or IS_________ very different from results expected is what I am having trouble with.
i have to chose "is not" or "is"
I thk I have the first 2 parts of the words problem correct
#8 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 05:27:56
▼ REJECT _________or FAIL TO REJECT___________ H0.
There ▼ IS____________or IS NOT_______________ sufficient evidence to warrant rejection of the claim that these women have no ability to predict the gender of their baby. The results for these women with 12 years of education or less suggests that their percentage of correct predictions ▼ IS NOT _________ or IS_________ very different from results expected with random guesses.
*********for this part I got "FAIL TO REJECT H0" and "IS NOT" sufficient evidence to warrant rejection.
I CANNOT FIGURE OUT THIS LAST PART OF THIS QUESTION. IS NOT/IS very different from results expected with random guesses. What do you think? Do my answers above look correct for this problem.
#9 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 05:12:55
what about that word problem?? I think I got the first 2 blanks correct but I don't know about the last part. IS.....Or........IS NOT very different results
expected with random guesses
#10 Re: Help Me ! » *NEED Help with STATS* » 2016-02-15 01:10:07
cool! THANKS...so number 1 is done!
Let compare some more answers....for #3 I got
D. H0: p= 0.50
H1: p not equal to 0.50
The test statistic is z = -1.19
The P value is 0.2332
▼ REJECT _________or FAIL TO REJECT___________ H0.
There ▼ IS____________or IS NOT_______________ sufficient evidence to warrant rejection of the claim that these women have no ability to predict the gender of their baby. The results for these women with 12 years of education or less suggests that their percentage of correct predictions ▼ IS NOT _________ or IS_________ very different from results expected with random guesses.
*********for this part I got "FAIL TO REJECT H0" and "IS NOT" sufficient evidence to warrant rejection.
I CANNOT FIGURE OUT THIS LAST PART OF THIS QUESTION. IS NOT/IS very different from results expected with random guesses. What do you think? Do my answers above look correct for this problem.
__________________________________________________________________________________________________________________________
#5
i got 112.23 is that correct?
Thanks! I still have 2 and 4 to figure out.
#11 Re: Help Me ! » *NEED Help with STATS* » 2016-02-14 15:21:00
For #1 C....i ended up getting
At least 58.4 inches and at most 68.0 inches. Is this what you got?
Thanks
#12 Re: Help Me ! » *NEED Help with STATS* » 2016-02-14 14:22:36
I ended up getting 99.37% I guess that is close enough? At first I couldn't figure out how I was getting an answer so different than yours but then I seen I was working it with a Standard Deviation of 2.5 instead of 2.2! LOL
WHAT DID YOU GET FOR 1 b).??? The new height requirements?
Thanks
#13 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-14 13:51:31
Great! I can't imagine moving that much! Sure in the process you threw away tons of stuff.
#14 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-13 13:07:16
OMG!!!! Hopefully soon you will be settled....
#15 Help Me ! » *NEED Help with STATS* » 2016-02-13 10:46:55
- sassytonigirl
- Replies: 20
I HAVE MOST OF THEM COMPLETED ON MY NEXT ASSIGNMENT I AM JUST HAVING TROUBLE WITH THE 5 BELOW. ANY HELP IS APPRECIATED!
#1
A survey found that women's heights are normally distributed with mean 63.5 in and standard deviation 2.2 in. A branch of the military requires women's heights to be between 58 in and 80 in.
a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall?
b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements?
a. The percentage of women who meet the height requirement is ____________%.(Round to two decimal places as needed.)
Are many women being denied the opportunity to join this branch of the military because they are too short or too tall?
A. Yes, because the percentage of women who meet the height requirement is fairly large.
B. No, because the percentage of women who meet the height requirement is fairly small.
C. No, because only a small percentage of women are not allowed to join this branch of the military because of their height.
D. Yes, because a large percentage of women are not allowed to join this branch of the military because of their height.
b. For the new height requirements, this branch of the military requires women's heights to be AT LEAST ________inches and AT MOST________inches. (Round to one decimal place as needed.)
#2
Assume that the significance level is alpha equals α=0.1. Use the given information to find the P-value and the critical value(s).
With H 1 : p≠ 1/2, the test statistic is z = −1.33.
P-value = ______________(Round to four decimal places as needed.)
The critical value(s) is/are ____________. (Round to three decimal places as needed. Use a comma to separate answers as needed.)
#3
In a study of pregnant women and their ability to correctly predict the gender of their baby, 57 of the pregnant women had 12 years of education or less, and 42.1% of them correctly predicted the gender of their baby. Use a 0.010 significance level to test the claim that these women have no ability to predict the gender of their baby, and the results are not significantly different from those that would be expected with random guesses. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution.
Identify the null and alternative hypotheses. Choose the correct answer below.
A.
H0: p=0.421
H1: p≠0.421
B.
H0: p=0.5
H1: p<0.5
C.
H0: p=0.421
H1: p>0.421
D.
H0: p=0.421
H1: p<0.421
E.
H0: p=0.5
H1: p≠0.5
F.
H0: p=0.5
H1: p>0.5
The test statistic is z =____________. (Round to two decimal places as needed.)
The P-value is ______________. (Round to four decimal places as needed.)
Identify the conclusion about the null hypothesis and the final conclusion that addresses the original claim.
▼ REJECT _________or FAIL TO REJECT___________ H0.
There ▼ IS____________or IS NOT_______________ sufficient evidence to warrant rejection of the claim that these women have no ability to predict the gender of their baby. The results for these women with 12 years of education or less suggests that their percentage of correct predictions ▼ IS NOT _________ or IS_________ very different from results expected with random guesses.
#4
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
A simple random sample of 25 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 18.4mg and a standard deviation of 3.88 mg. Use a 0.05 significance level to test the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg, which is the mean for unfiltered king size cigarettes. What do the results suggest, if anything, about the effectiveness of the filters?
What are the hypotheses?
A. H0: μ<21.1 mg
H1: μ≥21.1 mg
B. H0: μ=21.1 mg
H1: u≥21.1 mg
C. H0: μ=21.1 mg
H1: μ<21.1 mg
D. H0: μ>21.1 mg
H1: μ<21.1 mg
Identify the test statistic.
t =________ (Round to three decimal places as needed.)
Identify the P-value.
The P-value is ________.(Round to four decimal places as needed.)
State the final conclusion that addresses the original claim. Choose the correct answer below.
A. Fail to reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
B. Reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
C. Fail to reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1mg.
D. Reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg.
A_________B___________C__________ OR D_____________
What do the results suggest, if anything, about the effectiveness of the filters?
A. The results suggest that the filtered cigarettes have the same tar content as unfiltered king size cigarettes.
B. The results do not suggest that the filters are effective.
C. The results suggest that the filters increase the tar content.
D. The results suggest that the filters are effective.
E. The results are inconclusive because the sample size is less than 30.
A_________B_________C___________D__________ OR E____________
#5
Suppose IQ scores were obtained from randomly selected couplescouples. For 20 such pairs of people,
the linear correlation coefficient is 0.913 and the equation of the regression line y=−8.35+1.06x,
where x represents the IQ score of the wifewife. Also, the 20 x values have a mean of 98.11 and the 20 y
values have a mean of 95.4.
What is the best predicted IQ of the husbandhusband, given that the wifewife has an IQ of 98? Use a significance level of 0.05.
The best predicted IQ of the husband is ____________. (Round to two decimal places as needed.)
THANK YOU SO MUCH!!!!
#16 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-13 09:51:32
Did you get moved and settled? I have another set of 20 questions I am working on. I have them all done except 5 that I am having problems with. I am going to post them in another link. Thanks
#17 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 15:16:48
I got a 95! Was very proud of myself!!! 
#18 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 15:15:24
I figured it out and went ahead and submitted my work. Im tired of messing with it. thanks for your help and guidance.
#19 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 14:26:55
*******************************************************I FIGURED OUT NUMBER 9 THE LAST PART...IT IS C.....HAD WE NOT COMPLETED A SCATTERPLOT WE WOULD NOT REALIZE THAT IT IS NOT A STRAIGHT LINE PATTERN. The scatterplot reveals a distinct pattern that is not a straight-line pattern.*************
SEE IM GETTING "BETTER".....
PLEASE JUST HELP ME WITH THE LAST PART OF NUMBER 5....
What does this suggest about the use of 98.6 °F as the mean body temperature?
A.This suggests that the mean body temperature could be higher than 98.6 °F.
B.This suggests that the mean body temperature could be lower than 98.6 °F.
C.This suggests that the mean body temperature could be very possibly be 98.6 °F.
THIS PART... the other part of the question is above....THANKS AGAIN!!!
#20 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 14:10:05
BOBBYM****Did you get your ceiling fixed? I sure hope so!!!!
Yah me on #9 I figured out why B is the answer.
Use the given data set to complete parts (a) through (c) below. (Use α =0.05.)
x 10 8 13 9 11 14 6 4 12 7 5
y 9.15 8.15 8.73 8.77 9.26 8.11 6.13 3.11 9.13 7.26 4.73
r=0.816
If i had to draw a scatter plot what would it look like? I thought it would be like an upside down u without the right side of the u going all the way back down but after reading about positive correlations i wonder if the way i graphed it is wrong. what do you think?
********ALSO WHAT DO YOU THINK ABOUT THIS QUESTION BELOW? IT IS ALSO APART OF #9 (THIS PROBLEM) BUT I DONT UNDERSTAND IT AT ALL*********
c. Identify the feature of the data that would be missed if part (b) was completed without constructing the scatterplot. Choose the correct answer below.
A. The scatterplot reveals a distinct pattern that is not a straight-line pattern.
B. The scatterplot reveals a distinct pattern that is a straight-line pattern with negative slope.
C. The scatterplot does not reveal a distinct pattern.
D. The scatterplot reveals a distinct pattern that is a straight-line pattern with positive slope.
__________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
5.
A data set includes 103 body temperatures of healthy adult humans for which x = 98.1degrees°F and s=0.56°F. Complete parts (a) and (b) below.
a. What is the best point estimate of the mean body temperature of all healthy humans?
The best point estimate is _________degrees°F. (Type an integer or a decimal.)
*****98.1**********IS THIS ANSWER
b. Using the sample statistics, construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. Do the confidence interval limits contain 98.6°F? What does the sample suggest about the use of 98.6 °F as the mean body temperature?
What is the confidence interval estimate of the population mean μ?
_______°F < μ < ________°F (Round to three decimal places as needed.)
*************97.955 <U< 98.245************* THIS IS ANSWER I GOT
Do the confidence interval limits contain 98.6 °F? (no or yes)
________No
________Yes **********NO IT DOES NOT CONTAIN 98.6***********
************************************************************THIS IS THE PART OF THE QUESTION I NEED HELP WITH*****************************I understand that the sample suggest that the use of 98.6 is NOT valid or reliable but out of the below choices I don't know what to pick...
What does this suggest about the use of 98.6 °F as the mean body temperature?
A.This suggests that the mean body temperature could be higher than 98.6 °F.
B.This suggests that the mean body temperature could be lower than 98.6 °F.
C.This suggests that the mean body temperature could be very possibly be 98.6 °F.
BOBBYM
IF YOU CAN HELP ME WITH THESE 2 PARTS OF THESE 2 QUESTIONS I WILL BE VERY GRATEFUL...CALLING IT A NIGHT. I ONLY GOT 2 HOURS OF SLEEP LAST NIGHT.
#21 Re: Help Me ! » Elementary statistics set 1 » 2016-02-07 18:47:57
PLEASE help me with 3 and 5.
for #3 I have 0.675 <p< 0.685 but I don't know the last part of it..The word problem. I am assuming that it is A. no, the sample is a voluntary sample and might not be representative of the population.
#5 I have done none of...
Thanks again!
#22 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-07 18:44:31
Trust me...I can nurse you...I'll leave the calculations of stats up to you...lol
Guess I need to get to bed. Been sitting here at this table for 12 hours now working these problems and I have to get up in 3 hours. If you can help me with problems 3, 5, and 9 I may even fluff your pillow and give a back rub while you are in the ICU. lol
for #3 I have 0.675 <p< 0.685 but I don't know the last part of it..The word problem. I am assuming that it is A. no, the sample is a voluntary sample and might not be representative of the population.
#9 - I worked out and got the r score of 0.816 but I haven't done the 2 word problems under it...
AND
#5 I have done none of...
Thanks again!
The above problem is #9.
#23 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-07 18:04:41
I have been a nurse for almost 16 years now. There is some truth to your comment above, but being a nurse is a lot of GRAY and math is so BLACK AND WHITE. I have no desire to be a research nurse. I am a hands on nurse who likes to be at the bedside dealing with very difficult patients (like you, lol). Research nurses do need this math, I however will never be that person. I am simply taking this math because I have to as a part of the graduate nurse program. The challenge this has presented to me is that it is online and is basically self taught. I am doing very well in the class but absolutely ever single minute that I am not working my full time nursing job, being a wife and a mother of 2 active little girls is spent figuring out these problems. I HATE for something to beat me so I sit here and work things over and over and over!
Give me difficult patients who are dying with multi system organ failure and any problem you can think of and that is up my alley all day long, but this statistics stuff is for the birds!!!!
Thank you so much for your help!
#24 Re: Help Me ! » Elementary statistics set 3 » 2016-02-07 17:58:34
Thank you!
#25 Re: Help Me ! » Elementary statistics set 3 » 2016-02-07 16:05:53
#10
a. A.- Yes, because the absolute value of the test statistic exceed the critical value of 0.707
b. 0.790
let me know if you get something different. All of this stuff runs together and confuses me!
Thanks