Statistics for The Behavioral Sciences (MindTap Course List)
10th Edition
ISBN: 9781305504912
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 20P
- A population consists of the following
Transform the original population into a new population of
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20 km, because
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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
Let X be a random variable with support SX = {−3, 0.5, 3, −2.5, 3.5}. Part ofits probability mass function (PMF) is given bypX(−3) = 0.15, pX(−2.5) = 0.3, pX(3) = 0.2, pX(3.5) = 0.15.(a) Find pX(0.5).(b) Find the cumulative distribution function (CDF), FX(x), of X.1(c) Sketch the graph of FX(x).
Chapter 5 Solutions
Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 5 - What information is provided by the sign (+/)of a...Ch. 5 - A distribution has a standard deviation of =10....Ch. 5 - For a distribution with a standard deviation of...Ch. 5 - For a population with =60and =12 Find the a-score...Ch. 5 - For a population with =40and =11 , find the...Ch. 5 - For a population with a mean of =100and a standard...Ch. 5 - A population has a mean of =60and a standard...Ch. 5 - Find the a-score corresponding to a score of X=45...Ch. 5 - Find the X value corresponding to z=0.25 of the...Ch. 5 - A score that is 6 points below the mean...
Ch. 5 - A score that is 9 points above the mean...Ch. 5 - For a population with a standard deviation of (...Ch. 5 - For a population with a mean of =70, a score of...Ch. 5 - In a population distribution, a score of...Ch. 5 - For each of the following populations, would a...Ch. 5 - A distribution of exam scores has a mean of =78....Ch. 5 - For each of the following, identify the exam score...Ch. 5 - A distribution with a mean of =38and a standard...Ch. 5 - A distribution with a mean of =76and a standard...Ch. 5 - A population consists of the following N=5scores:...Ch. 5 - A sample has a mean of M=30and a standard...Ch. 5 - A sample has a mean of M=25and a standard...Ch. 5 - For a sample with a standard deviation of s=8, a...Ch. 5 - For a sample with a mean of M=51, a score of...Ch. 5 - In a sample distribution, X=56corresponds to...Ch. 5 - A sample consists of the following n=7 scores: 5,...
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