A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects records from 82 such drivers in 2009 and determines the sample mean BAC to be 0.17 g/dL with a standard deviation of 0.060 g/dL. Complete parts (a) through (d) below. ... B. The sample size is likely less than 5% of the population. O C. The sample size is likely greater than 5% of the population. O D. The sample size is likely greater than 10% of the population. (c) Determine and interpret a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC. (Use ascending order. Round to three decimal places as needed.) O A. The lower bound is and the upper bound is . The researcher is 90% confident that the population mean BAC is not in the confidence interval for drivers involved in fatal accidents who have a positive BAC value. O B. The lower bound is and the upper bound is The researcher is 90% confident that the population mean BAC is in the confidence interval for drivers involved in fatal accidents who have a positive BAC value. O C. The lower bound is and the upper bound is The researcher is 10% confident that the population mean BAC is in the confidence interval for drivers involved in fatal accidents who have a positive BAC value.
A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects records from 82 such drivers in 2009 and determines the sample mean BAC to be 0.17 g/dL with a standard deviation of 0.060 g/dL. Complete parts (a) through (d) below. ... B. The sample size is likely less than 5% of the population. O C. The sample size is likely greater than 5% of the population. O D. The sample size is likely greater than 10% of the population. (c) Determine and interpret a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC. (Use ascending order. Round to three decimal places as needed.) O A. The lower bound is and the upper bound is . The researcher is 90% confident that the population mean BAC is not in the confidence interval for drivers involved in fatal accidents who have a positive BAC value. O B. The lower bound is and the upper bound is The researcher is 90% confident that the population mean BAC is in the confidence interval for drivers involved in fatal accidents who have a positive BAC value. O C. The lower bound is and the upper bound is The researcher is 10% confident that the population mean BAC is in the confidence interval for drivers involved in fatal accidents who have a positive BAC value.
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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Transcribed Image Text:A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He
randomly selects records from 82 such drivers in 2009 and determines the sample mean BAC to be 0.17 g/dL with a standard deviation of 0.060 g/dL. Complete parts
(a) through (d) below.
B. The sample size is likely less than 5% of the population.
C. The sample size is likely greater than 5% of the population.
D. The sample size is likely greater than 10% of the population.
(c) Determine and interpret a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC.
(Use ascending order. Round to three decimal places as needed.)
O A. The lower bound is
and the upper bound is
The researcher is 90% confident that the population mean BAC is not in the confidence interval for drivers
involved in fatal accidents who have a positive BAC value.
B. The lower bound is
and the upper bound is
The researcher is 90% confident that the population mean BAC is in the confidence interval for drivers
involved in fatal accidents who have a positive BAC value.
C. The lower bound is
and the upper bound is
The researcher is 10% confident that the population mean BAC is in the confidence interval for drivers
involved in fatal accidents who have a positive BAC value.
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