# Test the null hypothesis that the means from two populations are equal in the following case. 1 and 2 are sample means found from samples with size n1 and n2 drawn from normal distributions with known variances 21 and 22.

Test the null hypothesis that the means from two populations are equal in the following case. 1 and 2 are sample means found from samples with size n1 and n2 drawn from normal distributions with known variances σ21 and σ22. State the significance level of the test. Use a two-tailed test.

1 = 20.0, 2 = 21.0, n1 = 25, n2 = 50, σ21 = 25.0, σ22 = 25.0.

1 = 20.0, 2 = 21.0, n1 = 25, n2 = 50, σ21 = 25.0, σ22 = 25.0.

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## The distribution of the sample mean from the first sample is N 1 1 0 and for the second is N 2 0 5 b…View the full answer

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