(04.05) Exactly 20% of the students in a school wear glasses. Sixty-five students are selected randomly...
(04.05)
Exactly 20% of the students in a school wear glasses. Sixty-five students are selected randomly to determine the probability that exactly 10 students wear glasses. Should a binomial probability density function or a cumulative distribution function be used? Explain. (4 points)
|
a |
A binomial cumulative distribution function should be used because the question asks for determining the probability that exactly 10 students wear glasses. |
|
b |
A binomial probability density function should be used because the question asks for determining the probability that exactly 10 students wear glasses. |
|
c |
A binomial cumulative distribution function should be used because the question states exactly 20% of students wear glasses. |
|
d |
A binomial probability density function should be used because the question states exactly 20% of the students wear glasses. |
|
e |
A binomial probability would not be used because the events are not independent of each other. |
Homework Answers
Solution:
The correct option is b.
A binomial probability density function should be used because the question asks for determining the probability that exactly 10 students wear glasses.
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(04.05)
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