In a random sample of 1193 American adults aged 25 or older, it was found that 38.9% of them had acollege degree. Construct a 98% confidence interval for the true proportion of all Americans aged 25 orolder who have a college degree.Give your answers as decimals, rounded to 3 places after the decimal point (if necessary).98% confidence interval for p:

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Answered: In a random sample of 1193 American…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A survey asked, "How many tattoos do you currently have on your body?" Of the 1205 males surveyed, 199 responded that they had at least one tattoo. Of the 1030 females surveyed, 127 responded that they had at least one tattoo. Construct a 99% 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 p1 represent the proportion of males with tattoos and p2 represent the proportion of females with tattoos. Find the 99% 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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