428338.2670904.qx3zqy7 Jump to level 1 An airline company is interested in improving customer satisfaction rate from the 54% currently claimed. The company sponsored a survey of 227 customers and found that 137 customers were satisfied. 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 or = 0.01? |Select v Select 2 Yes No 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/ How was this section? Provide feedback