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You are not logged in. #1 20131004 03:03:47
StatisticsA statistician conducted a research and the results showed that 65% of bluecollar workers agree that 8 working hours per day is acceptable. A random sample of n bluecollar workers was selected and let X be a random variable defined as the number of bluecollar workers agree the view. #2 20131004 04:13:21
Re: StatisticsHi cynthia258; b) P(15 or less agree) = .04248 In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20131007 22:36:00
Re: Statisticsexcuse me, how can you know p(x<15) in part b? i don't understand why the number is 15 #4 20131007 22:57:37
Re: StatisticsHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #5 20131008 04:46:43
Re: Statisticsp(x<15)=p(z< 1519.5 / 2.612 )=p(z<1.7225)=0.50.4573=0.0427 #6 20131008 05:43:36
Re: StatisticsHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #7 20131008 06:19:38
Re: StatisticsIn part c, #8 20131008 06:22:28
Re: StatisticsA t  table is the students distribution. That is for small sample sizes. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 