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Construct a confidence interval for µ

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The claim is made that the average grade in a statistics class is 78.3. A sample of 38 students gave a sample mean of 74.3. The population has a standard deviation of σ = 14.

a) Test this claim at α = 0.02

b) Construct a 98% Confidence Interval for μ

c) Are the results in (a) and (b) the same? Why or why not? BE SPECIFIC!

d) For what values of x will H0 be rejected? BE SPECIFIC

Reference no: EM132384894

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