Use the given discrete probability distribution to find the following. x P(x) 10 0.13 15 0.28 20 0.32 25 0.17 30 0.10 Calculate the mean and the standard deviation using your calculator. $\mu=$ $\sigma=$
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Step 1
Since the sum of probabilities must be 1, we have: $0.13 + 0.28 + P(20) + 0.17 + 0.10 = 1$ $0.68 + P(20) = 1$ $P(20) = 1 - 0.68 = 0.32$ Show more…
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