In: Statistics and Probability
2. A corporation must appoint a president, chief executive
officer (CEO), chief operating officer (COO), and...
2. A corporation must appoint a president, chief executive
officer (CEO), chief operating officer (COO), and chief financial
officer (CFO). It must also appoint a planning committee with
three different members. There are 14 qualified candidates, and
officers can also serve on the committee. Complete parts (a)
through (c) below.
a. How many different ways can the officers be appointed? There
are ...... ? different ways to appoint the officers.
b. How many different ways can the committee
be appointed?
There are___different ways to appoint the committee.
c. What is the probability of randomly
selecting the committee members and getting the three youngest of
the qualified candidates?
P(getting the three youngest of the qualified
candidates)=________
(Type an integer or a simplified fraction.)
3. The data represent the results for a test for a
certain disease. Assume one individual from the group is randomly
selected. Find the probability of getting someone who tests
positive, given that he or she did not have the disease. The
individual actually had the disease
Yes No
postive |
123 |
39 |
negative |
11 |
127 |
The probability is approximately ...... ?(Round to three decimal
places as needed.)
4. The accompanying table shows the results from a
test for a certain disease. Find the probability of selecting a
subject with a
negative test result, given that the subject has the disease.
What would be an unfavorable consequence of this error?
The individual actually had the disease
Yes No
Postive |
311 |
4 |
Negative |
15 |
1185 |
The probability is ......?(Round to three decimal places
asneeded.)
5. In an experiment, college students were given either four
quarters or a $1 bill and they could either keep the money or
spend it on gum. The results are summarized in the table. Complete
parts (a) through (c) below.
Purchased Gum Kept the Money
Students Given Four Quarters |
35 |
18 |
Students Given a $1 Bill |
16 |
26 |
a. Find the probability of randomly selecting a student who
spent the money, given that the student was given four
quarters.
The probability is ...... ? (Round to three decimal places
asneeded.)
b. Find the porbability of randomly selecting a student who kept
the money, given that the student was given a $1bill
The probability is .....? (Round to three decimal places as
needed).
c. What do the preceding results suggest?
A. a student given a $1 bill is more likely to have kept the
money
B. a student given a $1 bill is more likely to have kept the
money than a student given four quarters.
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I need help to answer all of them please !