fined as the percentage of a specified number of se he following data for time

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 22EQ
icon
Related questions
Question
9.75 Call centers today play an important role in managing day-
to-day business communications with customers. It's important,
therefore, to monitor a comprehensive set of metrics, which can
help businesses understand the overall performance of a call center.
One key metric for measuring overall call center performance is
service level which is defined as the percentage of calls answered
by a human agent within a specified number of seconds. The file
Service Level contains the following data for time, in seconds, to
answer 50 incoming calls to a financial services call center:
16 14 16 19 6 14 15 5 16 18 17 22 6 18 10
15 12 6 19 16 16 15 13 25 9 17 12 10 5 15
23 11 12 14 24 9 10 13 14 26 19 20 13 24 28
15 21 8 16 12
a. At the 0.05 level of significance, is there evidence that the
population mean time to answer calls is less than 20 seconds?
b. What assumption about the population distribution is needed in
order to conduct the t test in (a)?
c. Construct a histogram, boxplot, or normal probability plot to
evaluate the assumption made in (b).
Transcribed Image Text:9.75 Call centers today play an important role in managing day- to-day business communications with customers. It's important, therefore, to monitor a comprehensive set of metrics, which can help businesses understand the overall performance of a call center. One key metric for measuring overall call center performance is service level which is defined as the percentage of calls answered by a human agent within a specified number of seconds. The file Service Level contains the following data for time, in seconds, to answer 50 incoming calls to a financial services call center: 16 14 16 19 6 14 15 5 16 18 17 22 6 18 10 15 12 6 19 16 16 15 13 25 9 17 12 10 5 15 23 11 12 14 24 9 10 13 14 26 19 20 13 24 28 15 21 8 16 12 a. At the 0.05 level of significance, is there evidence that the population mean time to answer calls is less than 20 seconds? b. What assumption about the population distribution is needed in order to conduct the t test in (a)? c. Construct a histogram, boxplot, or normal probability plot to evaluate the assumption made in (b).
Expert Solution
steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Recommended textbooks for you
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL