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10. Journal Science and Technology published a study on the ammonia levels in the air near an exit ramp of a highway tunnel in the state of Selangor. The data in the table represent daily ammonia concentrations (in unit) on twelve randomly selected days in June 2011. 1.55 1.42 1.48 1.47 | 1.41 1.49 1.53 1.37 1.51 1.40 1.50 1.45 a) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming that the ammonia level follows a normal distribution with variance of 0.25 unit?. b) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming. that the ammonia level follows a normal distribution. c) Construct a 95% confidence interval for the standard deviation of daily ammonia level in the tunnel.

10. Journal Science and Technology published a study on the ammonia levels in the air near an exit ramp of a highway tunnel in the state of Selangor. The data in the table represent daily ammonia concentrations (in unit) on twelve randomly selected days in June 2011. 1.55 1.42 1.48 1.47 | 1.41 1.49 1.53 1.37 1.51 1.40 1.50 1.45 a) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming that the ammonia level follows a normal distribution with variance of 0.25 unit?. b) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming. that the ammonia level follows a normal distribution. c) Construct a 95% confidence interval for the standard deviation of daily ammonia level in the tunnel.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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10. Journal Science and Technology published a study on the ammonia levels in the air near an exit ramp of a highway tunnel in the state of Selangor. The data in the table represent daily ammonia concentrations (in unit) on twelve randomly selected days in June 2011. 1.53 | 1.37 | 1.51 | 1.55 | 1.40 | 1.49 1.50 1.45 | 1.42 | 1.48 | 1.47 | 1.41 a) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming that the ammonia level follows a normal distribution with variance of 0.25 unit. b) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming. that the ammonia level follows a normal distribution. c) Construct a 95% confidence interval for the standard deviation of daily ammonia level in the tunnel.
Transcribed Image Text:10. Journal Science and Technology published a study on the ammonia levels in the air near an exit ramp of a highway tunnel in the state of Selangor. The data in the table represent daily ammonia concentrations (in unit) on twelve randomly selected days in June 2011. 1.53 | 1.37 | 1.51 | 1.55 | 1.40 | 1.49 1.50 1.45 | 1.42 | 1.48 | 1.47 | 1.41 a) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming that the ammonia level follows a normal distribution with variance of 0.25 unit. b) Construct a 99% confidence interval for mean daily ammonia level in the tunnel assuming. that the ammonia level follows a normal distribution. c) Construct a 95% confidence interval for the standard deviation of daily ammonia level in the tunnel.
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