A company wants to estimate the mean time spent by clients waiting for their appointments in the waiting room. The waiting times (in minutes) recorded for a random sample of 32 such clients are given below. 110 42 88 19 35 76 10 151 2 44 27 77 53 102 66 39 20 108 92 55 14 52 3 62 78 15 60 121 40 35 11 72 What test should be used: t-test or z-test, and why? Construct a 95% confidence interval for the corresponding population mean.
A company wants to estimate the mean time spent by clients waiting for their appointments in the waiting room. The waiting times (in minutes) recorded for a random sample of 32 such clients are given below. 110 42 88 19 35 76 10 151 2 44 27 77 53 102 66 39 20 108 92 55 14 52 3 62 78 15 60 121 40 35 11 72 What test should be used: t-test or z-test, and why? Construct a 95% confidence interval for the corresponding population mean.
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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Question
A company wants to estimate the mean time spent by clients waiting for their appointments in the waiting room. The waiting times (in minutes) recorded for a random sample of 32 such clients are given below.
110
42
88
19
35
76
10
151
2
44
27
77
53
102
66
39
20
108
92
55
14
52
3
62
78
15
60
121
40
35
11
72
What test should be used: t-test or z-test, and why?
Construct a 95% confidence interval for the corresponding population mean.
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