Use the information below to answer Questions #7 and # 8. In a survey of 610 males ages 18 - 64, 393 say they have been to the dentist in the past year. Construct a 95% confidence interval for the population proportion of males ages 18 - 64 who have been to the dentist. Find the left end point for a 95% confidence interval. Round to three decimal places as needed.

Use the information below to answer Questions #7 and # 8. In a survey of 610 males ages 18 - 64, 393 say they have been to the dentist in the past year. Construct a 95% confidence interval for the population proportion of males ages 18 - 64 who have been to the dentist. Find the left end point for a 95% confidence interval. Round to three decimal places as needed.

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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Thelma and Louise are each attempting to estimate the proportion of adults who enjoy listening to country music. They each survey a different random sample of adults, and in each sample, the proportion who say they enjoy listening to country music is 0.29. Thelma and Louise each use their sample data to construct a confidence interval. Thelma's interval is from 0.242 to 0.338 and Louise's interval is from 0.237 to 0.323. One of these intervals was computed correctly and the other was not. Which interval must be the correct one? It's impossible to answer this question without knowing the level of confidence used for each interval. It's impossible to answer this question without knowing the sample sizes. O It's impossible to answer this question without knowing the sample sizes or the level of confidence used for each interval. Thelma's interval must be the correct interval. O Louise's interval must be the correct interval.
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