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12. The time to failure of 10 randomly selected batteries was measured. The average time to failure of the 10 batteries is 15.32 hours and the standard deviation of the 10 batteries is 1.335 hours. 12a) Determine a 95% confidence interval for μ. What type of confidence interval is this? AZ confidence interval - Bt confidence interval C Chi-square confidence interval D None of the above 12b) Determine a 95% confidence interval for μ. (4 decimal places) 12c) Determine a 98% confidence interval for the population standard deviation. What type of confidence interval is this? AZ - confidence interval Btconfidence interval C Chi-square confidence interval D None of the above 12d) Determine a 98% confidence interval for the population standard deviation. (4 decimal places)

12. The time to failure of 10 randomly selected batteries was measured. The average time to failure of the 10 batteries is 15.32 hours and the standard deviation of the 10 batteries is 1.335 hours. 12a) Determine a 95% confidence interval for μ. What type of confidence interval is this? AZ confidence interval - Bt confidence interval C Chi-square confidence interval D None of the above 12b) Determine a 95% confidence interval for μ. (4 decimal places) 12c) Determine a 98% confidence interval for the population standard deviation. What type of confidence interval is this? AZ - confidence interval Btconfidence interval C Chi-square confidence interval D None of the above 12d) Determine a 98% confidence interval for the population standard deviation. (4 decimal places)

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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12. The time to failure of 10 randomly selected batteries was measured. The average time to failure of the 10 batteries is 15.32 hours and the standard deviation of the 10 batteries is 1.335 hours. 12a) Determine a 95% confidence interval for μ. What type of confidence interval is this? AZ confidence interval - Bt confidence interval C Chi-square confidence interval D None of the above 12b) Determine a 95% confidence interval for μ. (4 decimal places) 12c) Determine a 98% confidence interval for the population standard deviation. What type of confidence interval is this? AZ - confidence interval Btconfidence interval C Chi-square confidence interval D None of the above 12d) Determine a 98% confidence interval for the population standard deviation. (4 decimal places)
Transcribed Image Text:12. The time to failure of 10 randomly selected batteries was measured. The average time to failure of the 10 batteries is 15.32 hours and the standard deviation of the 10 batteries is 1.335 hours. 12a) Determine a 95% confidence interval for μ. What type of confidence interval is this? AZ confidence interval - Bt confidence interval C Chi-square confidence interval D None of the above 12b) Determine a 95% confidence interval for μ. (4 decimal places) 12c) Determine a 98% confidence interval for the population standard deviation. What type of confidence interval is this? AZ - confidence interval Btconfidence interval C Chi-square confidence interval D None of the above 12d) Determine a 98% confidence interval for the population standard deviation. (4 decimal places)
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