The 2008 GSS asked, “What is the highest grade that you finished and got credit for?” (variable EDUC). Of 2018 respondents, the mean was 13.4, the standard deviation was 3.1, and the proportion who gave responses below 12 (i.e., less than a high school education) was 0.166. Explain how you could analyze these data by making inferences about a population mean or about a population proportion, or both. Show how to implement one of these types of inference with these data.
Answer to relevant QuestionsRefer to the previous exercise. For the 280 African Americans in the 2008 GSS, a 99% confidence interval for the mean of EDUC is (12.38, 13.16). Explain why the following interpretation is incorrect: 99% of all African ...A football coach decides to estimate the kicking accuracy of a player who wants to join the team. Of 10 extra point attempts, the player makes all 10. a. Find an appropriate 95% confidence interval for the probability that ...Explain why the terminology “do not reject H0” is preferable to “accept H0.” Refer to the previous exercise. Suppose z = 2.50 instead of 1.04. a. Find the P-value for (i) Ha: p > 0.50. (ii) Ha: p ≠ 0.50, and (iii) Ha: p < 0.50. b. Do any of the P-values in part a provide strong evidence against H0? ...For a large supermarket chain in Florida, a women’s group claimed that female employees were passed over for management training in favor of their male colleagues. The company denied this claim, saying they picked the ...
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