
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A population of values has a distribution with μ=95μ=95 and σ=94.1σ=94.1. You intend to draw a random sample of size n=35n=35.
According to the Central Limit Theorem:
(a) What is the
μ¯x=μx¯=
(b) What is the standard deviation of the distribution of sample means?
(Report answer accurate to 2 decimal places.)
σ¯x=σx¯=
(c) In a random sample of n=35, what is the probability that its random sample mean is more than 79.6? Round to three decimal places.
(d) In a random sample of n=35, what is the probability that its random sample mean is less than 75? Give your answer to three decimal places.
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