MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:а.
The table below shows the results of an
opinion poll on a new civil servants salary
structure.
Gender
Opinion
For
Against
Indifferent
Male
150
250
96
Female
180
142
28
Calculate the Chi-square (K2) value and using
the K?, test at a=0.05 the hypothesis that
opinion of workers is independent of
gender.
As part of an investigation into levels of
overtime working, a company decides to
b.
tabulate the number of orders received
weekly and compare this with the total
weekly overtime worked to give the following
Week
1 2 3 4 5 6 7 8 9 10
Orders
83 22 107 55 48 92 135 32 67 122
received
Total
38 9 42 18 11 30 48 10 29 51
overtime
Using the method of least squares obtain the
regression equation of total overtime on
Transcribed Image Text:Using the method of least squares obtain the
regression equation of total overtime on
orders received and predict the level of total
overtime necessary for 100 orders
The following table gives the distribution
of wages in k£ in three branches of Keses
factory.
с.
Daily wages
Number of Workers
K£
10-14
14
15
12
15-19
18
22
20
20-24
20
26
32
25-29
23
10
11
30-34
10
12
10
i)
Based on the mean wage, which
branch pays the higher average wage?
ii)
Which of the three branches has
greater variability in wages?
I
< >
II
K
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