A simple random sample of 5 observations from a normal distribution was taken, and the following values were obtained: {12, 15, 15, 17, 21}. A 90% confidence interval for the mean is O A. (13.553, 18.447) O B. (14.378, 17.622) O C. (13.567, 18.432) O D. (13.553, 18.447) O E. (11.883, 20.117)
A simple random sample of 5 observations from a normal distribution was taken, and the following values were obtained: {12, 15, 15, 17, 21}. A 90% confidence interval for the mean is O A. (13.553, 18.447) O B. (14.378, 17.622) O C. (13.567, 18.432) O D. (13.553, 18.447) O E. (11.883, 20.117)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Transcribed Image Text:QUESTION 8
A simple random sample of 5 observations from a normal distribution was taken, and the following values were obtained: (12, 15, 15, 17, 21}.
A 90% confidence interval for the mean is
O A. (13.553, 18.447)
O B. (14.378, 17.622)
O C. (13.567, 18.432)
O D. (13.553, 18.447)
O E. (11.883, 20.117)
QUESTION 9
A population has a standard deviation of 8. What is the minimum sample size needed to estimate a mean to within 2 units with 66.8% confidence
O A. 13
ОВ. 15
DELL
K
F8
EsC
F6
F7
F4
F5
F2
F3
Fo
F1
#
24
7
8
5
6
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