# z distribution.docx - Construct a 95% confidence interval...

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Construct a 95% confidence interval for a sampling distribution having means of {4, 4, 4, 4.2,4.2, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.4, 4.5, 4.5, 4.6, 4.7, 4.7, 4.7, 4.8, 4.8, 4.8, 4.9, 4.9, 4.9, 4.9, 5, 5,5, 5, 5, 5, 5.1, 5.1, 5.1, 5.2, 5.2}. The standard deviation of the population from which thesesamples were drawn was known to be:=0.357.ơ4.558 to 4.7925% to 95%4.577 to 4.7734.567 to 4.783Construct a 93% confidence interval for a sampling distribution having means of {4, 4, 4, 4.2,4.2, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.4, 4.5, 4.5, 4.6, 4.7, 4.7, 4.7, 4.8, 4.8, 4.8, 4.9, 4.9, 4.9, 4.9, 5, 5,5, 5, 5, 5, 5.1, 5.1, 5.1, 5.2, 5.2}. The standard deviation of the population from which thesesamples were drawn was known to be:=0.357.ơ7% to 93%4.558 to 4.7924.567 to 4.7834.577 to 4.773In which of the following do we use Z-distribution?
Sampling distribution of the mean may be abnormal

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