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An important quality characteristic of automobile batteries is their weight, since that characteristic is sensitive to the amount of lead in the battery plates. Forty batteries selected from recent production of a certain brand of a heavy duty battery have an average weight of 64.3 pounds and a variance of 1.44 pounds. Find a 90% confidence interval for the true average weight of the batteries of this brand. O a. (63.93, 64.67) O b. (63.81, 64.79) O c. (63.99, 64.61) O d. (63.71, 64.89) O e. (63.85, 64.75)

An important quality characteristic of automobile batteries is their weight, since that characteristic is sensitive to the amount of lead in the battery plates. Forty batteries selected from recent production of a certain brand of a heavy duty battery have an average weight of 64.3 pounds and a variance of 1.44 pounds. Find a 90% confidence interval for the true average weight of the batteries of this brand. O a. (63.93, 64.67) O b. (63.81, 64.79) O c. (63.99, 64.61) O d. (63.71, 64.89) O e. (63.85, 64.75)

MATLAB: An Introduction with Applications
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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An important quality characteristic of automobile batteries is their weight, since that characteristic is sensitive to the amount of lead in the battery plates. Forty batteries selected from recent production of a certain brand of a heavy duty battery have an average weight of 64.3 pounds and a variance of 1.44 pounds. Find a 90% confidence interval for the true average weight of the batteries of this brand. O a. (63.93, 64.67) O b. (63.81, 64.79) O C. (63.99, 64.61) O d. (63.71, 64.89) O e. (63.85, 64.75)
Transcribed Image Text:An important quality characteristic of automobile batteries is their weight, since that characteristic is sensitive to the amount of lead in the battery plates. Forty batteries selected from recent production of a certain brand of a heavy duty battery have an average weight of 64.3 pounds and a variance of 1.44 pounds. Find a 90% confidence interval for the true average weight of the batteries of this brand. O a. (63.93, 64.67) O b. (63.81, 64.79) O C. (63.99, 64.61) O d. (63.71, 64.89) O e. (63.85, 64.75)
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