Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

You are not logged in.

## #1 Help Me ! » Don't mean to be a bother,,just need help setting up :( » 2006-07-10 16:02:19

babyangel1972
Replies: 1

Not looking for the answer I am just horrible at math and don't understand.  Can you help me understand how to set up the problem.

a. Drawing from a regular deck of playing cards, what is the probability of drawing a face card (jack, queen, king) 3 times in a row?  (assume that jokers are taken our and assume no replacement)

b.  How would the probability change if you assumed replacement?

Thank You!

Thank You!

## #4 Help Me ! » Help » 2006-07-09 12:28:15

babyangel1972
Replies: 1

A tire company tested a particular model of super radial tire and found the tires to be normally distributed with respect to wear.  The "average" (mean) tire wore out at 59,000 miles , and the standard deviation was 2500 miles.

a.  If 2000 tires are tested, about how many are likely to wear out before 54,000 miles?

## #5 Help Me ! » Help... » 2006-07-09 12:24:55

babyangel1972
Replies: 5

Let's say a student scored 45 on a math achievement test for which the mean was 36 and the standard deviation was 6.  Judging on the basis of this performance, what score would you predict for her on a standardized test for which the mean is 100 and the standard deviation 15?

## #6 Help Me ! » Help » 2006-07-09 12:22:20

babyangel1972
Replies: 1

Suppose the distribution of heights of a group of 400 children is normal, with a mean of 150 centimeters and a standard deviation of 12 centimeters.  About how many of these children are taller than 162 centimeters?

## #7 Help Me ! » Any help is appreciated » 2006-07-09 12:20:17

babyangel1972
Replies: 1

Imagine the exam scores of a class of 10 students.  Make three very different distributions that all have a mean of 80.    ??  help

## #8 Help Me ! » Help is appreciated!! » 2006-07-09 12:17:03

babyangel1972
Replies: 2

John's bowling average is 152.  The other night, John's scores on the first two games were 132 and 138.  What does he need to boal on the tird game in order to maintain his average.
How do I solve this?

## #9 Re: Help Me ! » Freshen up my fraction skills » 2006-07-07 08:36:53

Thank you everyone!!!!

## #10 Help Me ! » Freshen up my fraction skills » 2006-07-06 18:43:15

babyangel1972
Replies: 4

I have always hated fractions....Can you give me some pointers (how do you solve the problems below)

1.  Reduce the fractions to the lowest terms that make whole or mixed numbers.

14/4=

38/8=

14/6=

---------------------------------------------------------
2.  Where do I begin with these???????

6  3/5  x  1  2/8  =

2 2/5   +  6  3/4  =

## #11 Help Me ! » fractions » 2006-06-04 08:13:14

babyangel1972
Replies: 2

Can you show me how to complete these problems.....the work involved

1.  3/4 is _____ to .75
a. <     b, >   c, =    d,  /

2.  .45 is ______ to 1/3
a. <     b. >    c. =    d.  /

## #12 Help Me ! » Another word problem » 2005-12-16 02:34:57

babyangel1972
Replies: 1

A light pole casts a shadow 22 feet long.  A 6 foot man standing 10 feet from the base of the light pole cast a shadow of 12 feet.  How tall is the light pole?

## #13 Help Me ! » Word problem » 2005-12-13 11:45:59

babyangel1972
Replies: 2

Between the years 1999 and 2003 the average text book rose from \$45.00 to \$67.00/  What is the percent of increase (rounded to the nearest whole number) for the average text book.

## #14 Help Me ! » Word problem » 2005-12-13 11:44:08

babyangel1972
Replies: 1

On a roll of film with 24 exposures, 6 exposures did not print.  What percent of the film did not print.

## #15 Help Me ! » Math problem » 2005-12-13 04:31:55

babyangel1972
Replies: 2

If
ooo
ooo         ~
ooo         =         ¾, show 1
ooo

## #16 Help Me ! » Find the Sum » 2005-12-13 04:10:14

babyangel1972
Replies: 1

Find the sum:   KM  +  XW
Z        ZM

## #17 Help Me ! » Find the Median » 2005-12-13 04:06:15

babyangel1972
Replies: 3

The median price of homes sold in 1991 by region of the country is given below.
South=  \$88,200
Northeast=  \$136,700
Midwest= \$76,800
West=  \$147,600
The median price of a home in the Midwest was approximatley what fraction of the median selling price of a home in the West?