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A parenting magazine reports that the average amount of wireless data used by teenagers each month is 7 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 25 teenagers at her high school, and calculates a mean of 6.5 Gb per month with a standard deviation of 1.8 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.01 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

A parenting magazine reports that the average amount of wireless data used by teenagers each month is 7 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 25 teenagers at her high school, and calculates a mean of 6.5 Gb per month with a standard deviation of 1.8 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.01 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

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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Step 2 of 3:

Compute the value of the test statistic. Round your answer to three decimal places.

Step 3 of 3:

Draw a conclusion and interpret the decision.

A parenting magazine reports that the average amount of wireless data used by teenagers each month is 7 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 25 teenagers at her high school, and calculates a mean of 6.5 Gb per month with a standard deviation of 1.8 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.01 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables в Кеурad Keyboard Shortcuts
Transcribed Image Text:A parenting magazine reports that the average amount of wireless data used by teenagers each month is 7 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 25 teenagers at her high school, and calculates a mean of 6.5 Gb per month with a standard deviation of 1.8 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.01 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables в Кеурad Keyboard Shortcuts
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