Understanding Basic Statistics
7th Edition
ISBN: 9781305254060
Author: Charles Henry Brase, Corrinne Pellillo Brase
Publisher: Cengage Learning
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Chapter 5, Problem 1CR
StatisticalLiteracy Consider the following two events for an individual: A = owns a cell phone B = owns a laptop computer
Translate each
(a)
(b) A and B(c) B\A
(c)A or B
(a)
Expert Solution
To determine
The translation of
Answer to Problem 1CR
Solution: The individual does not own a cell phone.
Explanation of Solution
Given: A = the event that an individual owns a cell phone.
The complement of an event A is denoted as
According to the provided information for an individual, the event A is defined as ‘owns a cellphone’. So, the complement of event A is ‘the individual does not own a cellphone’.
(b)
Expert Solution
To determine
The translation of
Answer to Problem 1CR
Solution: The event that an individual owns a cell phone and a laptop computer.
Explanation of Solution
Given: A = an individual owns a cell phone, B = an individual owns a laptop computer.
Both the events A and B, occurring together is denoted as
According to the provided information for an individual, the event A is defined as ‘owns a cellphone’ and the event B is defined as ‘owns a laptop computer’. So, both the events A and B occurring together can be defined as ‘the individual owns a cellphone and a laptop computer’.
(c)
Expert Solution
To determine
The translation of
Answer to Problem 1CR
Solution: The individual owns either a cell phone or a laptop computer or both.
Explanation of Solution
Given: A = an individual owns a cell phone, B = an individual owns a laptop computer.
The occurrence of either event A or B or both is denoted as
According to the provided information for an individual, the event A is defined as ‘owns a cellphone’ and the event B is defined as ‘owns a laptop computer’. So, the occurrence of either event can be defined as ‘the individual owns a cellphone or a laptop computer or both’.
(d)
Expert Solution
To determine
The translation of
Answer to Problem 1CR
Solution: The individual is a laptop computer owner who owns a cellphone.
Explanation of Solution
Given: A = an individual owns a cell phone, B = an individual owns a laptop computer.
The occurrence of event A given that event B has occurred is denoted as
According to the provided information for an individual, the event A is defined as ‘owns a cellphone’ and the event B is defined as ‘owns a laptop computer’. So, the occurrence of A given that event B has occurred is defined as ‘the individual who is an owner of a laptop computer, owns a cellphone’.
(e)
Expert Solution
To determine
The translation of
Answer to Problem 1CR
Solution: The individual is a cellphone owner who owns a laptop computer.
Explanation of Solution
Given: A = an individual owns a cell phone, B = an individual owns a laptop computer.
The occurrence of event B given that the event A has occurred is denoted as
According to the provided information for an individual, the event A is defined as ‘owns a cellphone’ and the event B is defined as ‘owns a laptop computer’. So, the occurrence of event B given that event A has occurred can be defined as ‘the individual who is an owner of a cellphone, owns a laptop computer’.
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I just need to know why this is wrong below:
What is the test statistic W? W=5 (incorrect)
and
What is the p-value of this test? (p-value < 0.001-- incorrect)
Use the Wilcoxon signed rank test to test the hypothesis that the median number of pages in the statistics books in the library from which the sample was taken is 400. A sample of 12 statistics books have the following numbers of pages
pages
127
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What is the sum of the negative ranks (W-)? 75 What is the sum of the positive ranks (W+)? 5What type of test is this? two tailedWhat is the test statistic W? 5 These are the critical values for a 1-tailed Wilcoxon Signed Rank test for n=12
Alpha Level
0.001
0.005
0.01
0.025
0.05
0.1
0.2
Critical Value
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70
68
64
60
56
50
What is the p-value for this test? p-value < 0.001
Chapter 5 Solutions
Understanding Basic Statistics
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