Essentials Of Statistics
4th Edition
ISBN: 9781305093836
Author: HEALEY, Joseph F.
Publisher: Cengage Learning,
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Textbook Question
Chapter 2, Problem 2.2P
SOC At. St. Winnefred Hospital, the number of males and females in various job categories are as follows:
| Job | Males | Females | Totals |
| Doctor | 83 | 15 | 98 |
| Nurse | 62 | 116 | 178 |
| Orderly | 151 | 12 | 163 |
| Lab technician | 32 | 30 | 62 |
| Administrator | 12 | 1 | 13 |
| Clerk | 72 | 141 | 213 |
| Totals | 412 | 315 | 727 |
Read each question carefully before constructing the fraction and solving for the answer. (HINT: Be sure you place the proper number in the denominator of each fraction. For example, some problems use the total number of males or females as the denominator, whereas others use the total number of subjects.)
a. What percentage of nurses are male?
b. What proportion of orderlies are female?
c. For doctors, what is the ratio of males to females?
d. What percentage of the total staff are males?
e. What is the ratio of males to females for the entire sample?
f. What proportion of the clerks are male?
g. What percentage of the sample are administrators?
h. What is the ratio of female lab technicians?
i. What is the ratio of female lab technicians to male lab technicians?
j. What proportion of the males are clerks?
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Worksheet 10
Jesse runs a small business selling and delivering mealie meal to the spaza shops.
He charges a fixed rate of R80, 00 for delivery and then R15, 50 for each packet of
mealle meal he delivers. The table below helps him to calculate what to charge
his customers.
10
20
30
40
50
Packets of mealie
meal (m)
Total costs in Rands
80
235
390
545
700
855
(c)
10.1.
Define the following terms:
10.1.1. Independent Variables
10.1.2. Dependent Variables
10.2.
10.3.
10.4.
10.5.
Determine the independent and dependent variables.
Are the variables in this scenario discrete or continuous values? Explain
What shape do you expect the graph to be? Why?
Draw a graph on the graph provided to represent the information in the
table above.
TOTAL COST OF PACKETS OF MEALIE MEAL
900
800
700
600
COST (R)
500
400
300
200
100
0
10
20
30
40
60
NUMBER OF PACKETS OF MEALIE MEAL
Chapter 2 Solutions
Essentials Of Statistics
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