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A home improvement company is interested in improving customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 141 customers and

A home improvement company is interested in improving customer satisfaction rate from the 74%

currently claimed. The company sponsored a survey of 141

customers and found that 112

customers were satisfied.

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 of =0.01

?

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