Answered: A survey asked, "How many tattoos do…

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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Question

A survey asked, "How many tattoos do you currently have on your body?" Of the

1204

males surveyed,

177

responded that they had at least one tattoo. Of the

1055

females surveyed,

131

responded that they had at least one tattoo. Construct a

95%

confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval.

Let

represent the proportion of males with tattoos and

represent the proportion of females with tattoos. Find the

95%

confidence interval for

p1−p2.

The lower bound is

nothing.

The upper bound is

nothing.

(Round to three decimal places as needed.)

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