According to CTIA, 41% of all U.S. households are wireless-only households. In a simple random sample of
Question:
According to CTIA, 41% of all U.S. households are wireless-only households. In a simple random sample of 300 households, determine the mean and standard deviation number of wireless-only households.
Approach This is a binomial experiment with n = 300 and p = 0.41. Use Formula (2) to find the mean and standard deviation, respectively.
Formula 2
Transcribed Image Text:
== x = np and x = np(1 - p) (2)
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Related Book For
Statistics Informed Decisions Using Data
ISBN: 9781292157115
5th Global Edition
Authors: Michael Sullivan
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