Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
Calculate the standard deviation ? of X for the probability distribution. (Round your answer to two decimal places.)
? =
x | −20 | −10 | 0 | 10 | 20 | 30 |
---|---|---|---|---|---|---|
P(X = x)
|
0.1 | 0.1 | 0.1 | 0.3 | 0 | 0.4 |
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- Use the probability distribution for the random variable x to answer the question. 0 1 2 3 4 5 p(x) 0.19 0.35 0.17 0.06 0.2 0.03 Locate the interval u ± 20 on the x-axis of a probability histogram. You are given that the mean is 1.82 and the standard deviation is 1.49. What is the probability that x will fall into this interval?arrow_forwardPoints: 5 10) Find the mean and standard deviation for the probability distribution. Round answers to the nearest tenth. Show your work below. P(x) .000 1 2 3 14 .002 .001 0.05 0.257 0.69 Мean Standard Deviationarrow_forward
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