(Answered) Find the standard deviation of the sample proportion

Statistics

Problem: A survey of 300300CEOs finds that 174174of them think that the economy will improve next year. Is there evidence that the rate is higher among all CEOs than the 5353%reported by the public at large? Provide your rationale and any supporting data.

Required:

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

b) Find the z-statistic.

c) Does the z-statistic seem like a particularly large or small value?

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