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What is the test statistic z

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A home improvement company is interested in improving customer satisfaction rate from the 80% currently claimed. The company sponsored a survey of 209 customers and found that 178 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 α=0.01?

Reference no: EM132896737

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