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A blogger claims that U.S. adults drink an average of five 8-ounce glasses (that's 40 ounces) of water per day. Researchers wonder if this claim is true, so they ask a random sample of 24 U.S. adults about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. We want to test Ho: μ = 40 Ha:μ ‡ 40 where μ = the true mean number of ounces of water that a U.S. adult drinks per day. The 90% confidence interval for the mean daily water intake is 30.35 to 36.92 ounces. Based on this interval, what conclusion would you make for a test of the given hypotheses at the a = 0.10 significance level? We fail to reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake that U.S. adults drink in a day is different from 40 ounces. We fail to reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is 40 ounces. We reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is greater than 40 ounces.

A blogger claims that U.S. adults drink an average of five 8-ounce glasses (that's 40 ounces) of water per day. Researchers wonder if this claim is true, so they ask a random sample of 24 U.S. adults about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. We want to test Ho: μ = 40 Ha:μ ‡ 40 where μ = the true mean number of ounces of water that a U.S. adult drinks per day. The 90% confidence interval for the mean daily water intake is 30.35 to 36.92 ounces. Based on this interval, what conclusion would you make for a test of the given hypotheses at the a = 0.10 significance level? We fail to reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake that U.S. adults drink in a day is different from 40 ounces. We fail to reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is 40 ounces. We reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is greater than 40 ounces.

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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A blogger claims that U.S. adults drink an average of five 8-ounce glasses (that's 40 ounces) of water per day. Researchers wonder if this claim is true, so they ask a random sample of 24 U.S. adults about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. We want to test Ho: μ = 40 Ha: μ # 40 a. where μ = the true mean number of ounces of water that a U.S. adult drinks per day. The 90% confidence interval for the mean daily water intake is 30.35 to 36.92 ounces. Based on this interval, what conclusion would you make for a test of the given hypotheses at the a = 0.10 significance level? We fail to reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake that U.S. adults drink in a day is different from 40 ounces. We fail to reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is 40 ounces. We reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is greater than 40 ounces.
Transcribed Image Text:A blogger claims that U.S. adults drink an average of five 8-ounce glasses (that's 40 ounces) of water per day. Researchers wonder if this claim is true, so they ask a random sample of 24 U.S. adults about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. We want to test Ho: μ = 40 Ha: μ # 40 a. where μ = the true mean number of ounces of water that a U.S. adult drinks per day. The 90% confidence interval for the mean daily water intake is 30.35 to 36.92 ounces. Based on this interval, what conclusion would you make for a test of the given hypotheses at the a = 0.10 significance level? We fail to reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake that U.S. adults drink in a day is different from 40 ounces. We fail to reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is 40 ounces. We reject Ho) at the a = 0.10) significance level. We do not have convincing evidence that the mean daily water intake is different from 40 ounces. We reject Ho) at the a = 0.10) significance level. We have convincing evidence that the mean daily water intake is greater than 40 ounces.
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