Account Overview - Acc X Gradebook X zy Section 6.3 - ONT/275T x course hero log in - Sea X Course Hero * > nEls login - Search X Speaker Broadcast - Pre x + X C n & https://learn.zybooks.com/zybook/ONT_275T_55318202/chapter/6/section/3 G S Bookmarks b Suggested Sites Imported From IE | Other favorites =zyBooks My library > QNT/275T: Statistics for Decision Making home > 6.3: Hypothesis test for a population proportion zyBooks catalog ? Help/FAQ @ Bill Mccarthy CHALLENGE ACTIVITY 6.3.1: Hypothesis test for a population proportion. 380506.1429276.qx3zqy7 Jump to level 1 An airline company is interested in improving customer satisfaction rate from the 72% currently claimed. The company sponsored a survey of 238 customers and found that 183 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim by the company. What is the test statistic z? Ex: 2.22+ What is the p-value? Ex: 0.123 Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of a = 0.05? Select v 2 3 Check Next Feedback? References (*1) Grech, Victor, et al. "Unexplained differences in sex ratios at birth in Europe and North America." BMJ, 324(7344), 27 April 2002, www.ncbi.nim.nih.gov/pmc/articles/PMC102777/ 2:43 PM 2/14/2022 14