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A USE SALT (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.) (b) What assumptions must be made for use of the z confidence interval to be appropriate? (Select all that apply.) O The sample is a random sample. O The sample is voluntary. O The sample is independent. O The sample size is large.

A USE SALT (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.) (b) What assumptions must be made for use of the z confidence interval to be appropriate? (Select all that apply.) O The sample is a random sample. O The sample is voluntary. O The sample is independent. O The sample size is large.

MATLAB: An Introduction with Applications
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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"Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article describes a study of 55 young adults with pierced tongues. The researchers found receding gums, which can lead to tooth loss, in 17 of the participants. A USE SALT (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.) (b) What assumptions must be made for use of the z confidence interval to be appropriate? (Select all that apply.) O The sample is a random sample. O The sample is voluntary. O The sample is independent. O The sample size is large.
Transcribed Image Text:"Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article describes a study of 55 young adults with pierced tongues. The researchers found receding gums, which can lead to tooth loss, in 17 of the participants. A USE SALT (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.) (b) What assumptions must be made for use of the z confidence interval to be appropriate? (Select all that apply.) O The sample is a random sample. O The sample is voluntary. O The sample is independent. O The sample size is large.
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