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Testing of hypothesis of mean

Test H0: μ1 - μ2 = 2, HA: μ1 - μ2 > 2, where u1 = 522, u2 = 516, s12 = 28, s22 = 24, n1 = 40, n2 = 30, at α = .01.

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H0 : μ1 - μ2 = 2,

H1 : μ1 - μ2 > 2,

Test statistic

(mean1 - mean2) -(μ1 - ...

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