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1. A student is interested in the mean life span of males in his town. He has heard claims that the mean age at death for males in his town is 69 years, but suspects that it is less. He randomly selects 48 male deaths from the past year. The mean age at death for these 48 men was 67.5 years, with a standard deviation of 2.71 years. Test the student's claim at the 0.05 level of significance.

1. A student is interested in the mean life span of males in his town. He has heard claims that the mean age at death for males in his town is 69 years, but suspects that it is less. He randomly selects 48 male deaths from the past year. The mean age at death for these 48 men was 67.5 years, with a standard deviation of 2.71 years. Test the student's claim at the 0.05 level of significance.

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
Section10.1: Measures Of Center
Problem 4GP
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1. A student is interested in the mean life span of males in his town. He has heard claims that the mean age at death for males in his town is 69 years, but suspects that it is less. He randomly selects 48 male deaths from the past year. The mean age at death for these 48 men was 67.5 years, with a standard deviation of 2.71 years. Test the student's claim at the 0.05 level of significance. Step 5: There sufficient evidence to conclude that 2 cat2
Transcribed Image Text:1. A student is interested in the mean life span of males in his town. He has heard claims that the mean age at death for males in his town is 69 years, but suspects that it is less. He randomly selects 48 male deaths from the past year. The mean age at death for these 48 men was 67.5 years, with a standard deviation of 2.71 years. Test the student's claim at the 0.05 level of significance. Step 5: There sufficient evidence to conclude that 2 cat2
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