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(Solved): Standard Normal Cumulative Probability Table Cumulative probabilities for POSITIVE z-values are sh ...
Standard Normal Cumulative Probability Table Cumulative probabilities for POSITIVE z-values are shown in the following table:
2) Let \( X \) be a normal random variable with mean 4 and variance 9 . (a) Find the probability \( P(1c)=.75 \). (c) Find \( E\left[X^{2}\right] \)
Expert Answer
Given that random variable x follows normal distribution with mean ?=4 with variance ?2=9 therfore ths standard deviation of the distribution is: ?=?2