7.1.3: Hypothesis Test For A Population Proportion
7.1.3: Hypothesis Test For A Population Proportion.
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An airline company is interested in improving customer satisfaction rate from the 72% currently claimed. The company sponsored a survey of 300 customers and found that 227 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? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level ax=0.05?
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