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# \$10.00Need help with 11 questions

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Professor Kafka teaches an
advanced probability class with an enrollment of 11 students. The front row has
9 chairs. A particular student, Carl, must sit in the front row between his
tutor, Sue, and his best friend, Pat. In how many different ways can Professor
Kafka assign students to sit in the first row?

40,320

282,240

141,120

20,160

Consider the genetic
possibilities for a child of parents who are both carriers of sickle cell
anemia. What is the probability that the child will be a carrier of sickle cell
anemia? (Solve using a Punnett sqaure)

1/8

¾

1/3

½

Find the number of combinations
when 11 objects are taken 4 at a time.

330

10,080

3960

1,663,200

Suppose that the mean salary in a
particular profession is \$45,000 with a standard deviation of \$2,000. To what
percentile does a salary of \$48,000 correspond?

93rd

91st

43rd

41st

A student is taking a
standardized test consisting of multiple choice questions for which there are
five options for each question. Four points are awarded for each correct
answer, but the student loses 2 points for an incorrect answer. Questions left
blank neither receive nor lose points. What is the minimum number of options
that the student should be able to rule out before making a guess on any
particular question?

None

One

Two

Three

How many branches are required in
a tree diagram showing how many ways three dice could be rolled?

186

216

18

228

Select 8 cards with replacement
from a standard 52-card deck and observe whether a ten is drawn. Determine
whether this experiment is a binomial experiment. If not, explain what property
of a binomial experiment fails.

No; there are more than two outcomes

Yes

No; the probability of success is not the same
from trial to trial

No; the number of trials is not fixed

If two fair dice are rolled, what
is the probability that a total of three shows?

1/18

1/36

1/9

1/12

What is the probability that 12
rolls of a die will show exactly three fours?

0.0987

0.3948

0.1974

0.0395

Find the probability If P(A∪ B) = 0.62, P(A) = 0.34, and P(B) = 0.47, find P(A∩ B).

0.15

0.6

0.31

0.19

Find the standard deviation.
(Round to one more place than the data)

17, 12, 18, 19, 19, 12, 10, 7, 11

4.4

4.7

1.7

4.2

v

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