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What is the test statistic z

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Reference no: EM132857796

An airline company is interested in improving customer satisfaction rate from the 55% currently claimed. The company sponsored a survey of 190 customers and found that 114 customers were satisfied.

What is the test statistic z?

What is the p-value?

Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of a=.01 (not an a but I can't figure out the symbol).

Reference no: EM132857796

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