MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
X ~ N(50, 9). Suppose that you form random samples of 25 from this distribution. Let
X
be the random variable of averages. Let ΣX be the random variable of sums.

Sketch the graph, shade the region, label and scale the horizontal axis for

X,

and find the probability. (Round your answer to four decimal places.)

P(46 < X < 52) =
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