Given a normal distribution with σ = 3,we want to test the hypothesis H0: μ = 20.We find that the sample mean is 21.The test statistic is
A)1.000
B)1.645
C)1.960
D)impossible to find without more information.

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The Answer of Given a normal distribution with σ = 3,we want to test the hypothesis H0: μ = 20.We find that the sample mean is 21.The test statistic is
A)1.000
B)1.645
C)1.960
D)impossible to find without more information.

Given a Normal Distribution with σ = 3,we Want to Test