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a.
To show that the distribution is valid.
a.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.9MPS
Valid.
Explanation of Solution
Given:
The given table is
Calculation:
For finding out whether the distribution is valid sum the probabilities-
Since the sum of probabilities is equal to
b.
To find the probability that the randomly chosen coat has fewer than
b.
![Check Mark](/static/check-mark.png)
Answer to Problem 12.9MPS
Explanation of Solution
Given:
The given table is
Calculation:
The probability that the randomly chosen coat has fewer than
c.
To make the probability graph of the data.
c.
![Check Mark](/static/check-mark.png)
Explanation of Solution
Given:
The given table is
Calculation:
The probability graph of the data is given below-
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