In Problems 9.18 and 9.19, what are the critical values of t if the level of significance, a, is 0.05 and the alternative hypothesis, H1, is μ ≠ 50?
Answer to relevant QuestionsIf, in a sample of n = 160 selected from a left- skewed population, X-bar = 65, and S = 21, would you use the t test to test the null hypothesis H0 : μ = 60? Discuss. The file FastFood contains the amount that a sample of fifteen customers spent for lunch ($) at a fast- food restaurant: a. At the 0.05 level of significance, is there evidence that the mean amount spent for lunch is ...Experian Marketing Services reported that the typical American spends a mean of 144 minutes (2.4 hours) per day accessing the Internet via a mobile device. (Source: The 2014 Digital Marketer, available at ex. pn/ 1kXJjfX.) ...In Problems, suppose you are testing the null hypothesis H0: π = 0.20 against the two- tail alternative hypothesis H1: π ≠ 0.20 and you choose the level of significance a = 0.05. What is your statistical decision? What is the five- step p- value approach to hypothesis testing?
Post your question