A fleet of 100 planes has an airtime standard deviation of 14.9 hours. A sample of 32 of these planes gave a mean airtime of 49 hours. Construct a 90% confidence interval on the mean air time of this fleet. A. 23.22, 23.50 B. 23.32, 23.68 C. $949.39, $1050.61 D. $949.59, 1050.61 E. 949.19, $1050.41 F. 44.76, 53.23 G. 44.76, 52.33 H. 23.02, 23.38 I. $949.29, $1050.51 J. NONE K. 44.67, 53.33 L. 23.12, 23.48

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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A fleet of 100 planes has an airtime standard deviation of 14.9 hours. A sample of 32 of these planes gave a mean airtime of 49 hours. Construct a 90% confidence interval on the mean air time of this fleet.   

 

A. 23.22, 23.50

B. 23.32, 23.68

C. $949.39, $1050.61

D. $949.59, 1050.61

E. 949.19, $1050.41

F. 44.76, 53.23

G. 44.76, 52.33

H. 23.02, 23.38

I. $949.29, $1050.51

J. NONE

K. 44.67, 53.33

L. 23.12, 23.48

 

 

 

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