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 51 such drivers in 2009 and determines the sample mean BAC to be 0.16 g/dL with a standard deviation of 0.080 g/dL. Complete parts (a) through (d) below. O D. Since the distribution of blood alcohol concentrations is highly skewed right, a large sample size is needed to minimize the margin of error to ensure only the peak of the sampling distribution is captured in the confidence interval. (b) Recently there were approximately 25,000 fatal crashes in which the driver had a positive BAC. Explain why this, along with the fact that the data were obtained using a simple random sample, satisfies the requirements for constructing a confidence interval. O A. The sample size is likely less than 10% of the population. O B. The sample size is likely greater than 5% of the population. & C. The sample size is likely less 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. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) O A. There is a % probability that the population mean BAC is between and for drivers involved in fatal accidents who have a positive BAC value. O B. The researcher is % confident that the population mean BAC is between and for drivers involved in fatal accidents who have a positive BAC value. O C. The researcher is % confident that the population mean BAC is not between and 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 51 such drivers in 2009 and determines the sample mean BAC to be 0.16 g/dL with a standard deviation of 0.080 g/dL. Complete parts (a) through (d) below. O D. Since the distribution of blood alcohol concentrations is highly skewed right, a large sample size is needed to minimize the margin of error to ensure only the peak of the sampling distribution is captured in the confidence interval. (b) Recently there were approximately 25,000 fatal crashes in which the driver had a positive BAC. Explain why this, along with the fact that the data were obtained using a simple random sample, satisfies the requirements for constructing a confidence interval. O A. The sample size is likely less than 10% of the population. O B. The sample size is likely greater than 5% of the population. & C. The sample size is likely less 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. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) O A. There is a % probability that the population mean BAC is between and for drivers involved in fatal accidents who have a positive BAC value. O B. The researcher is % confident that the population mean BAC is between and for drivers involved in fatal accidents who have a positive BAC value. O C. The researcher is % confident that the population mean BAC is not between and for drivers involved in fatal accidents who have a positive BAC value.
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
Related questions
Topic Video
Question
answer c
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 51 such
drivers in 2009 and determines the sample mean BAC to be 0.16 g/dL with a standard deviation of 0.080 g/dL. Complete parts (a) through (d) below.
OITCE LIIt uistmoutIOIT OI DIOOU AICONOI COICEnti ALIONS IS TIiymy S CWCU TIymi, a iaiIye sampit SIZT IS TITCESsai y lu TISuit lIiai lint UIStNbutiOIT OI TE samipit IMtalT Is apprUIITialtiyTIOITTiAI.
D. Since the distribution of blood alcohol concentrations is highly skewed right, a large sample size is needed to minimize the margin of error to ensure only the peak of the sampling distribution is
captured in the confidence interval.
(b) Recently there were approximately 25,000 fatal crashes in which the driver had a positive BAC. Explain why this, along with the fact that the data were obtained using a simple random sample, satisfies the
requirements for constructing a confidence interval.
O A. The sample size is likely less than 10% of the population.
B. The sample size is likely greater than 5% of the population.
C. The sample size is likely less 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. Select the correct choice below and fill in the answer boxes to complete your
choice.
(Use ascending order. Round to three decimal places as needed.)
O A. There is a
% probability that the population mean BAC is between
and
for drivers involved in fatal accidents who have a positive BAC value.
B. The researcher is
% confident that the population mean BAC is between
and
for drivers involved in fatal accidents who have a positive BAC value.
C. The researcher is
% confident that the population mean BAC is not between
and
for drivers involved in fatal accidents who have a positive BAC value.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt