1.
Question:
How many ways can a committee of 5 be chosen from 25 people?
Your
Answer:
100
125
6375600
15504
53130
CORREC
T
Instructor
Explanation:
use the formula nCr because order doesn't matter
Points
Received:
4 of 4
2.
Question:
Which of the following cannot be a probability?
Your
Answer:
1
85%
4/3
CORREC
T
Instructor
Explanation:
4/3 which = 1.333.
... cannot be a probability because probabilities are always
between 0 and 1 inclusive.
Points
Received:
4 of 4
3.
Question:
Use this table to answer questions #3 through #6. Some students were asked if they
carry a credit card. Here are the responses.
Class______  Credit Card Carrier  Not a Credit Card Carrier  Total
Freshman______________33_______________________27________________60
Sophomore______________6_______________________34________________40
Total__________________39_______________________61________________100
What is the probability that the student was a freshman?
Your
Answer:
60/100 = .6 = 60%
Instructor
Explanation:
P(Freshman) = 60/100 = .600
Points
Received:
4 of 4
4.
Question:
What is the probability that the student is a freshman and doesn't carry a credit card?
Your
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 Spring '08
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 Probability theory, Credit history, Fair Credit Reporting Act, Credit Card Carrier

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