Find the indicated z score. The graph depicts the normal standard distribution w

Question

Find the indicated z score. The graph depicts the normal standard distribution with mean 0 and standard deviation 1. 0.1314 cumulative area below z score. Find the indicated z score. The graph depicts the normal standard distribution with mean 0 and standard deviation 1. 0.1314 cumulative area below z score. stery ime Taken:0:24:34 Delany McDonald: Attempt 1 Question 8 (1 point) b Calculate the mean of the following probability distribution. Number of girls Probability P(x) 0 1/4 1/2 1/4 2 0 O1/2 D This is not a probability distribution

Explanation / Answer

hee mean E(X) = 0 * 1/4 + 1 * 1/2 + 2 * 1/4 = 1

Var(X) = 1/4 * (0-1)2 + 1/2 * (1 - 1)2 + 1/4* (2 - 1)2 = 0.5

STD(X) = sqrt(0.5) = 0.7

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