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d. Insert the word sufficient or insufficient into the following statement. There is _sample evidence to conclude that the variance of the lengths of time men is larger than the variance of the lengths of time for women. e. Insert the missing numbers, which are endpoints of 90% confidence interval for the ratio of two population variances. Keep two digits after decimal point in the answer. 66 -22

d. Insert the word sufficient or insufficient into the following statement. There is _sample evidence to conclude that the variance of the lengths of time men is larger than the variance of the lengths of time for women. e. Insert the missing numbers, which are endpoints of 90% confidence interval for the ratio of two population variances. Keep two digits after decimal point in the answer. 66 -22

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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Solve question #13 parts D and E. 

A study was conducted to compare the length of time between men and women to assemble a certain product. Sample standard deviation in a random sample of times for 13 men was 5.6 minutes, and sample standard deviation in a random sample of times for 16 women was 4.3 minutes. Past experience indicate that population of times is normal for both men and women. Is it sufficient sample evidence to conclude that the variance of the lengths of time for men is larger than the variance of the lengths of time for women? Test appropriate hypothesis at a = 0.05 level of significance using critical value approach. Use S²/S2 as test statistic. Construct a 90% confidence interval for the ratio of two population variances. a. State null and research hypotheses H: H₁₂ : b. The observed value of test statistic is c. State the rejection region (in the form of inequality) d. Insert the word sufficient or insufficient into the following statement. There is _sample evidence to conclude that the variance of the lengths of time for men is larger than the variance of the lengths of time for women. e. Insert the missing numbers, which are endpoints of 90% confidence interval for the ratio of two population variances. Keep two digits after decimal point in the answer. 9739
Transcribed Image Text:A study was conducted to compare the length of time between men and women to assemble a certain product. Sample standard deviation in a random sample of times for 13 men was 5.6 minutes, and sample standard deviation in a random sample of times for 16 women was 4.3 minutes. Past experience indicate that population of times is normal for both men and women. Is it sufficient sample evidence to conclude that the variance of the lengths of time for men is larger than the variance of the lengths of time for women? Test appropriate hypothesis at a = 0.05 level of significance using critical value approach. Use S²/S2 as test statistic. Construct a 90% confidence interval for the ratio of two population variances. a. State null and research hypotheses H: H₁₂ : b. The observed value of test statistic is c. State the rejection region (in the form of inequality) d. Insert the word sufficient or insufficient into the following statement. There is _sample evidence to conclude that the variance of the lengths of time for men is larger than the variance of the lengths of time for women. e. Insert the missing numbers, which are endpoints of 90% confidence interval for the ratio of two population variances. Keep two digits after decimal point in the answer. 9739
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