You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the populatic mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 44 business days, the mean closing price of a certain stock was $117.74. Assume the population standard deviation is $9.51, ...... The 90% confidence interval is ( ). (Round to two decimal places as needed.) The 95% confidence interval is ( I ). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. O The 90% confidence interval O The 95% confidence interval Interpret the results. O A. You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. O B. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 40 of the 44 days, and was within the 95% confidence interval for approximately 42 of the 44 days. O C. You can be 90% confident that the population mean price of the stock is between the bounds of the 90% confidence interval, and 95% confident for the
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the populatic mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 44 business days, the mean closing price of a certain stock was $117.74. Assume the population standard deviation is $9.51, ...... The 90% confidence interval is ( ). (Round to two decimal places as needed.) The 95% confidence interval is ( I ). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. O The 90% confidence interval O The 95% confidence interval Interpret the results. O A. You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. O B. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 40 of the 44 days, and was within the 95% confidence interval for approximately 42 of the 44 days. O C. You can be 90% confident that the population mean price of the stock is between the bounds of the 90% confidence interval, and 95% confident for the
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population
mean. Interpret the results and compare the widths of the confidence intervals.
From a random sample of 44 business days, the mean closing price of a certain stock was $117.74. Assume the population standard deviation is $9.51,
.....
The 90% confidence interval is ( ).
(Round to two decimal places as needed.)
The 95% confidence interval is ( I D.
(Round to two decimal places as needed.)
Which interval is wider? Choose the correct answer below.
The 90% confidence interval
O The 95% confidence interval
Interpret the results.
O A. You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervals or the upper
bounds of the 90% and 95% confidence intervals.
O B. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 40 of the 44 days, and was within the 95%
confidence interval for approximately 42 of the 44 days.
O C. You can be 90% confident that the population mean price of the stock is between the bounds of the 90% confidence interval, and 95% confident for the
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Transcribed Image Text:You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population
mean. Interpret the results and compare the widths of the confidence intervals,
From a random sample of 44 business days, the mean closing price of a certain stock was $117.74. Assume the population standard deviation is $9.51,
IE JJ IU LUIUCIICE ILGI VaI 13 1-
(Round to two decimal places as needed.)
Which interval is wider? Choose the correct answer below.
O The 90% confidence interval
The 95% confidence interval
Interpret the results.
O A. You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervals or the upper
bounds of the 90% and 95% confidence intervals.
O B. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 40 of the 44 days, and was within the 95%
confidence interval for approximately 42 of the 44 days.
O C. You can be 90% confident that the population mean price of the stock is between the bounds of the 90% confidence interval, and 95% confident for the
95% interval.
O D. You can bê 90% confident that the population mean price of the stock is outside the bounds of the 90% confidence interval, and 95% confident for the
95% interval.
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