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A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The pooled variance estimator (sp2) (round off to three decimal places) is: O A. 10.145 O B. 11.959 3 O C. 10.820 O D. 3.458 O E. none of the preceding

A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The pooled variance estimator (sp2) (round off to three decimal places) is: O A. 10.145 O B. 11.959 3 O C. 10.820 O D. 3.458 O E. none of the preceding

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
Section10.5: Comparing Sets Of Data
Problem 13PPS
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A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The pooled variance estimator (sp2) (round off to three decimal places) is: O A. 10.145 O B. 11.959 3 O C. 10.820 O D. 3.458 O E. none of the preceding
Transcribed Image Text:A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The pooled variance estimator (sp2) (round off to three decimal places) is: O A. 10.145 O B. 11.959 3 O C. 10.820 O D. 3.458 O E. none of the preceding
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