What does the 95% represent in a 95% conﬁdence interval?
Answer to relevant QuestionsWhich is larger, the area under the t-distribution with 10 degrees of freedom to the right of t = 2.32 or the area under the standard normal distribution to the right of z = 2.32? Why? One question asked in the General Social Survey was this: “How many e-mails do you send in a day?” The results of 928 respondents indicate that the mean number of e-mails sent in a day is 10.4, with a standard deviation ...A question on the 2006 General Social Survey was this: “How many family members do you know that are in prison?” The results of 499 respondents indicate that the mean number of family members in jail is 1.22, with a ...Determine the point estimate of the population proportion, the margin of error for each conﬁdence interval, and the number of individuals in the sample with the speciﬁed characteristic, x, for the sample size ...In a survey of 3611 adult Americans 18 years and older conducted in July 2010 by Smart Revenue, it was found that 542 have used their smartphone to make a purchase. (a) Obtain a point estimate for the population proportion ...
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