Construct a histogram and comment on the process. What assumptions are necessary to test if the mean waiting time is less than 32 seconds?

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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5-9 A random sample of 50 observations on the waiting time (in seconds) of customers before
speaking to a representative at a call center is as follows:
33.2 29.4 36.5 38.1 30.0
29.1 32.2 29.5 36.0 31.5
34.5 33.6 27.4 30.4 28.4
32.6 30.4 31.8 29.8 34.6
30.7 31.9 32.3 28.2 27.5
34.9 32.8 27.7 28.4 28.8
30.2 26.8 27.8 30.5 28.5
31.8 29.2 28.6 27.5 28.5
30.8 31.8 29.1 26.9 34.2
33.5 27.4 28.5 34.8 30.5
a. Construct a histogram and comment on the process.
b. What assumptions are necessary to test if the mean waiting time is less than 32 seconds?
Transcribed Image Text:5-9 A random sample of 50 observations on the waiting time (in seconds) of customers before speaking to a representative at a call center is as follows: 33.2 29.4 36.5 38.1 30.0 29.1 32.2 29.5 36.0 31.5 34.5 33.6 27.4 30.4 28.4 32.6 30.4 31.8 29.8 34.6 30.7 31.9 32.3 28.2 27.5 34.9 32.8 27.7 28.4 28.8 30.2 26.8 27.8 30.5 28.5 31.8 29.2 28.6 27.5 28.5 30.8 31.8 29.1 26.9 34.2 33.5 27.4 28.5 34.8 30.5 a. Construct a histogram and comment on the process. b. What assumptions are necessary to test if the mean waiting time is less than 32 seconds?
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