Tattoo Attitude A Harris Interactive poll conducted during January 2008 found that 944
Chapter 9, Problem 29(choose chapter or problem)
Tattoo Attitude A Harris Interactive poll conducted during January 2008 found that 944 of 1748 adult Americans 18 years or older who do not have a tattoo believe that individuals with tattoos are more rebellious. (a) Obtain a point estimate for the proportion of adult Americans without tattoos who believe individuals with tattoos are more rebellious. (b) Verify that the requirements for constructing a confidence interval for p are satisfied. (c) Construct a 90% confidence interval for the proportion of adult Americans without tattoos who believe individuals with tattoos are more rebellious. (d) Construct a 99% confidence interval for the proportion of adult Americans without tattoos who believe individuals with tattoos are more rebellious. (e) What is the effect of increasing the level of confidence on the width of the interval?
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