Test whether the mean difference differs from zero

Reference no: EM131807253

Question: A sample of 20 paired observation generates the following data d = 1.3 and S²_D = 2.6. Assume a normal distribution.

a. Construct a 90% confidence interval for the mean difference μ_D.

b. Using the confidence interval, test whether the mean difference differs from zero. Explain.

Reference no: EM131807253

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