Given two normally distributed populations with equal means and standard deviations (01,02) = (31, 28), respectively, what is the probability that samples of size n₁ = 105 n2 111 will yield a value of 1-2 as large as or greater than -9 ? O e. 0.5853 O d. 0.9873 O b. 1.0000 O c. 0.9986 a. 0.9878

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