8.19 In a study of pulse rates of men, a simple random sample of 142 men results in a standard deviation of 11.2 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.01 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute; see the accompanying StatCrunch display for this test. What do the results indicate about the effectiveness of using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating σ in this case? Assume that the simple random sample is selected from a normally distributed population. One sample variance hypothesis test:o²: Variance of variableHo : 0² = 100HA: 0² # 100Hypothesis test results:Variable Sample Var. DF Chi-Square Stat P-valuePULSE125.70544 141177.244680.0418 LAHolaH₁:0 Y(Type integers or decimals. Do not round.)Identify the test statistic(Round to two decimal places as needed.)Identify the P-value.(Round to three decimal places as needed.)State the conclusion about the null hypothesis, as well as the final conclusion that addresses the originalclaim.the claim that pulse rates of men have a standard deviation equal to 10 beats per minute. Theeffective in this casesufficient evidence tothe null hypothesis. Theresignificant evidence that using the range rule of thumb with the "normal range from 60 to 100 beats per minute for estimating aresults indicate that there

The sample size: 142The population standard deviation: The sample variance:s2=125.70544Df=141The…

Answered: In a study of pulse rates of men, a…

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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8.19 In a study of pulse rates of men, a simple random sample of 142 men results in a standard deviation of 11.2 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.01 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute; see the accompanying StatCrunch display for this test. What do the results indicate about the effectiveness of using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating σ in this case? Assume that the simple random sample is selected from a normally distributed population.