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A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 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 4 teenagers at her high school, and calculates a mean of 9.2 Gb per month with a standard deviation of 1.4 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.10 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 11 Ha:μ

A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 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 4 teenagers at her high school, and calculates a mean of 9.2 Gb per month with a standard deviation of 1.4 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.10 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 11 Ha:μ

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 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 4 teenagers at her high school, and calculates a mean of 9.2 Gb per month with a standard deviation of 1.4 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.10 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 11 Ha:μ
Transcribed Image Text:A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 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 4 teenagers at her high school, and calculates a mean of 9.2 Gb per month with a standard deviation of 1.4 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.10 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 11 Ha:μ
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