D11 fx A 1 z-Test: Two Sample for Means 2 3 4 Mean 5 Known Variance 6 Observations 7 Hypothesized Mean Difference. 82 9 P(Z<=z) one-tail 10 z Critical one-tail 11 P(Z<=z) two-tail 12 z Critical two-tail 13 14 15 B Variable 1 94.66666667 7.088888889 30 0 -0.366474149 0.35700565 1.644853627 0.714011299 1.959963985 с Variable 2 94.93333333 8.795555556 30 D E

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A: Sample size(n)=50sample mean()=0.36%Standard deviation()=0.2%

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