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 confidênce intervals. If convenient, use technology to construct the confidence intervals. A random sample of 55 home theater systems has a mean price of $113.00. Assume the population standard deviation is $19.90. Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( ). (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is (. (Round to two decimal places as needed.) Interoret the results. Choose the correct answer below. Click to select your answer(s).-

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
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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. If convenient, use technology to construct the
confidence intervals.
A random sample of 55 home theater systems has a mean price of $113.00. Assume the population standard deviation is $19.90.
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is ( W D.
(Round to two decimal places as needed.)
Construct a 95% confidence interval for the population mean.
The 95% confidence interval is ( ).
(Round to two decimal places as needed.)
Interpret the results. Choose the correct answer below.
Click to select your answer(s).
P Type here to search
PrtScn
Home
F3
F4
F5
F8
F1
F2
&
$
4
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5
9-
8.
3.
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W N
Transcribed Image Text:B T 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. If convenient, use technology to construct the confidence intervals. A random sample of 55 home theater systems has a mean price of $113.00. Assume the population standard deviation is $19.90. Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( W D. (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is ( ). (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. Click to select your answer(s). P Type here to search PrtScn Home F3 F4 F5 F8 F1 F2 & $ 4 レ 5 9- 8. 3. E. H. K. W N
AWM
3.
Interpret the results. Choose the correct answer below.
A. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the
population mean price lies in the second interval. The 95% confidence interval is wider than the 90%.
B. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the
population mean price lies in the second interval. The 95% confidence interval is narrower than the 90%.
C. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the
sample mean price lies in the second interval. The 95% confidence interval is wider than the 90%.
Click to select your answer(s).
Type here to search
直 0
F1
F2
F3
PrtScn
F4
F5
Home
(口
F8
2.
5.
9.
H.
K.
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Transcribed Image Text:AWM 3. Interpret the results. Choose the correct answer below. A. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is wider than the 90%. B. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is narrower than the 90%. C. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval is wider than the 90%. Click to select your answer(s). Type here to search 直 0 F1 F2 F3 PrtScn F4 F5 Home (口 F8 2. 5. 9. H. K. B. N
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