An airline company is interested in improving customer satisfaction rate from the 50% currently claimed. The company sponsored a survey of 240 customers and found that 131 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 ? = 0.05?
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We want to test if the customer satisfaction rate is higher than 50%. So, we set up our null hypothesis (H0) and alternative hypothesis (H1) as follows: H0: p = 0.50 (customer satisfaction rate is 50%) H1: p > 0.50 (customer satisfaction rate is higher than 50%) Show moreā¦
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