5. Suppose 7% of all households have no home telephone but depend completely on cell phones. Find the probability that in a random sample of 450 households, between 25 and 35 will have no home telephone. You may assume that the normal distribution applies.
5. Suppose 7% of all households have no home telephone but depend completely on cell phones. Find the probability that in a random sample of 450 households, between 25 and 35 will have no home telephone. You may assume that the normal distribution applies.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:5. Suppose 7% of all households have no home telephone but depend
completely on cell phones. Find the probability that in a random sample of
450 households, between 25 and 35 will have no home telephone. You may
assume that the normal distribution applies.

Transcribed Image Text:2. A random sample of size 1,100 is taken from a population in which the
proportion with the characteristic of interest is p = 0.28. Find the indicated
probabilities.
a. P(0.27≤ ≤0.29)P(0.27<p <0.29)
b. P(0.23<p<0.33)
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