What is the test statistic z

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An airline company is interested in improving customer satisfaction rate from the 78% currently claimed. The company sponsored a survey of 185 customers and found that 155 customers were satisfied.

Question 1: What is the test statistic z

Question 2: What is the p value

Question 3: Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of α=0.1?

Reference no: EM132859026

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