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 47 business days the mean closing price of a certain stock was $120 06 Assume the population standard deviation is $9 99 The 90% confidence interval isO (Round to two decimal places as needed) The 95% confidence interval is D (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 OA. You can be 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 OB You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervas or the upper bounds of the 90% and 95% confidence intervals OC. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 42 of the 47 days and was within the 95%

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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 47 business days, the mean closing price of a certain stock was $120 06 Assume the population standard deviation is $9.99
se
se
The 90% confidence interval is O
(Round to two decimal places as needed)
The 95% confidence interval is
(Round to two decimal places as needed)
Which interval is wider? Choose the correct answer below
The 90% confidence interval
The 95% confidence interval
Interpret the results
O A. You can be 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
OB. 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
OC. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 42 of the 47 days, and was within the 95%N
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 47 business days, the mean closing price of a certain stock was $120 06 Assume the population standard deviation is $9.99 se se The 90% confidence interval is O (Round to two decimal places as needed) The 95% confidence interval is (Round to two decimal places as needed) Which interval is wider? Choose the correct answer below The 90% confidence interval The 95% confidence interval Interpret the results O A. You can be 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 OB. 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 OC. You can be certain that the closing price of the stock was within the 90% confidence interval for approximately 42 of the 47 days, and was within the 95%N
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