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A survey of 300CEOs finds that 189of them think that the economy will improve next year. Is there evidence that the rate is higher among

A survey of 300CEOs finds that 189of them think that the economy will improve next year. Is there evidence that the rate is higher among all CEOs than the 58%reported by the public atlarge?

a) Find the standard deviation of the sample proportion based on the null hypothesis.

b) Find thez-statistic.

c) Does thez-statistic seem like a particularly large or smallvalue?

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