Concept explainers
a.
Find the values of
a.

Answer to Problem 29P
The value of
The value of
The value of
Explanation of Solution
It is given that the events A, Pa, S, and N are defined as follows:
There are 686 customers in the
The
Thus, the probability of sale is 0.5914.
There are 270 customers in sale and aggressive approach.
The probability of sale given that aggressive approach is used as follows:
Thus, the probability of sale given that aggressive approach is 0.465.
The probability of sale given that passive approach is used is calculated as follows:
The probability of sale given that passive approach is used is 0.717.
b.
Explain whether the events
b.

Answer to Problem 29P
The events Sale and Passive approach are not independent.
Explanation of Solution
From Part (a), the value of
It is noticed that
c.
Find the values of
c.

Answer to Problem 29P
The value of
The value of
Explanation of Solution
There are 270 customers in both events sale and aggressive approach. The total number of participating customers is 1,160.
The value of
Thus, the value of
The number of customers in both events sale and passive approach is 416.
The value of
Thus, the value of
d.
Find the values of
d.

Answer to Problem 29P
The value of
The value of
Explanation of Solution
There are 474 customers in no sale and 1160 are participating customers.
The probability of no sale is as follows:
Thus, the probability of no sale is 0.408.
There are 270 customers in sale and aggressive approach.
The probability of no sale given that aggressive approach is used as follows:
Thus, the probability of no sale given that aggressive approach is 0.534.
e.
Explain whether the events
e.

Answer to Problem 29P
The events no sale and aggressive approach are not independent.
Explanation of Solution
From Part (d), the value of
It is noticed that
Therefore, the events no sale and aggressive approach are not independent.
f.
Find the value of
f.

Answer to Problem 29P
The value of
Explanation of Solution
The probability of aggressive approach or sale is as follows:
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Chapter 4 Solutions
Bundle: Understandable Statistics: Concepts And Methods, 12th + Webassign, Single-term Printed Access Card
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