MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
100%
#2
For question 2, provide:
a. Null and alternate hypotheses, level of significance, and left-tail, righ:-tail or two-
tailed test.
b. What sampling distribution will you use? What is the critical value of zo?
c. Sketch the critical region and show the critical value.
d. Calculate the z value corresponding to the sample statistic and show its location on the
sketch in part c.
e. Based on your answers, shall we reject or fail to reject the null hypothesis at the given
level of significance? Explain.
poin
eece ee e oe
2) According to the Wall Street Journal, a professional employee working in a large
company receives an average of 31.8 calls per day. Most of the calls are from other
employees in the company. Because of the large number of calls, employees find
themselves distracted and are unable to concentrate when they return to their tasks. In an
effort to reduce distraction caused by such interruptions, one company established a
"priority lit" that employees were to use before making phone calls. One month after the
new priorities were put into use, a random sample of 63 employees showed they were
receiving an average of 28.5 calls per day with a sample standard deviation of 10.7 calls
per day. Use a 1% level of significance to test the claim that there has been a change
(either way) in the average number of calls per day received. (Use o = 10.7)
Class co
da class
a.
b.
Page 1 / 2
Q +
%23
5
e
t
g h
C
alt
Transcribed Image Text:For question 2, provide: a. Null and alternate hypotheses, level of significance, and left-tail, righ:-tail or two- tailed test. b. What sampling distribution will you use? What is the critical value of zo? c. Sketch the critical region and show the critical value. d. Calculate the z value corresponding to the sample statistic and show its location on the sketch in part c. e. Based on your answers, shall we reject or fail to reject the null hypothesis at the given level of significance? Explain. poin eece ee e oe 2) According to the Wall Street Journal, a professional employee working in a large company receives an average of 31.8 calls per day. Most of the calls are from other employees in the company. Because of the large number of calls, employees find themselves distracted and are unable to concentrate when they return to their tasks. In an effort to reduce distraction caused by such interruptions, one company established a "priority lit" that employees were to use before making phone calls. One month after the new priorities were put into use, a random sample of 63 employees showed they were receiving an average of 28.5 calls per day with a sample standard deviation of 10.7 calls per day. Use a 1% level of significance to test the claim that there has been a change (either way) in the average number of calls per day received. (Use o = 10.7) Class co da class a. b. Page 1 / 2 Q + %23 5 e t g h C alt
Expert Solution
steps

Step by step

Solved in 5 steps with 1 images

Blurred answer
Knowledge Booster
Discrete Probability Distributions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman