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You randomly select 31 student cars and find they have a mean age of 7.5 years and a standard deviation of 3.6 years. You also random select 27 faculty cars and find they have a mean age of 5.9 years and a standard deviation of 3.3 years. 1. Use a 0.01 significance level to test the claim that student cars are older than faculty cars. (a) The test statistic is 1.755 (b) The P-value is (give to 4 decimal places): 0.0424 F T A. Yes B. No (c) Is there sufficient evidence to support the claim that student cars are older than faculty cars? # 2. Construct a 99% confidence interval estimate of the difference - μƒ, where µ is the mean age of student cars and μf is the mean age of faculty cars. (give answers to at least 3 decimal places) -0.832 - < (µs − Mƒ) < -

You randomly select 31 student cars and find they have a mean age of 7.5 years and a standard deviation of 3.6 years. You also random select 27 faculty cars and find they have a mean age of 5.9 years and a standard deviation of 3.3 years. 1. Use a 0.01 significance level to test the claim that student cars are older than faculty cars. (a) The test statistic is 1.755 (b) The P-value is (give to 4 decimal places): 0.0424 F T A. Yes B. No (c) Is there sufficient evidence to support the claim that student cars are older than faculty cars? # 2. Construct a 99% confidence interval estimate of the difference - μƒ, where µ is the mean age of student cars and μf is the mean age of faculty cars. (give answers to at least 3 decimal places) -0.832 - < (µs − Mƒ) < -

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
Section10.4: Distributions Of Data
Problem 19PFA
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You randomly select 31 student cars and find they have a mean age of 7.5 years and a standard deviation of 3.6 years. You also random select 27 faculty cars and find they have a mean age of 5.9 years and a standard deviation of 3.3 years. 1. Use a 0.01 significance level to test the claim that student cars are older than faculty cars. (a) The test statistic is 1.755 (b) The P-value is (give to 4 decimal places): 0.0424 A. Yes B. No ⠀ J (c) Is there sufficient evidence to support the claim that student cars are older than faculty cars? 4.032 2. Construct a 99% confidence interval estimate of the difference μμƒ, where µ is the mean age of - student cars and μf is the mean age of faculty cars. (give answers to at least 3 decimal places) -0.832 < (Ms − Mƒ) <
Transcribed Image Text:You randomly select 31 student cars and find they have a mean age of 7.5 years and a standard deviation of 3.6 years. You also random select 27 faculty cars and find they have a mean age of 5.9 years and a standard deviation of 3.3 years. 1. Use a 0.01 significance level to test the claim that student cars are older than faculty cars. (a) The test statistic is 1.755 (b) The P-value is (give to 4 decimal places): 0.0424 A. Yes B. No ⠀ J (c) Is there sufficient evidence to support the claim that student cars are older than faculty cars? 4.032 2. Construct a 99% confidence interval estimate of the difference μμƒ, where µ is the mean age of - student cars and μf is the mean age of faculty cars. (give answers to at least 3 decimal places) -0.832 < (Ms − Mƒ) <
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