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STATS TEST 2
1.
[1 point]
True or False: The number of males selected in a sample of 5 students taken without replacement
from a class of 9 females and 18 males has a Hypergeometric distribution.
True False
False
*
2.
[1 point]
On a 10 question quiz, the professor knows that the probability distribution for scores on the test
is as follows. A score of 100 has a probability of .04. A score of 90 has a probability of .30. A
score of 80 has a probability of .41. And a score of 70 has a probability of .25. What is the
expected value on a quiz?
a)
The expected value is between 0 and .80
b)
The expected value is between .81 and 1.0
c)
The expected value is between 1.1 and 70
d)
The expected value is between 70.1 and 80
e)
The expected value is between 80.1 and 200
*
3.
[1 point]
When Erin plays volleyball she has the following probability distributions for kills per game. 5
kills has a probability of .45. 4 kills has a probability of .25. 3 kills has a probability of .10. 2 kills
has a probability of .10. And, 1 kill has a probability of .10. What is the expected value Erin's
kills per game?
a)
The expected value is between 0 and .05
b)
The expected value is between .05 and 1.49
c)
The expected value is between 1.5 and 3.49
d)
The expected value is between 3.5 and 4.49
e)
The expected value is above 4.5
*
4.
[1 point]
Kelly averages 93 TPS reports per day with a population standard deviation of 7. She is leaving
the company in the next month or two and they are trying to get a replacement that can at least
start out at a level equivalent to Kelly's 25th percentile day. How many TPS reports does an
applicant have to be able to do in one day in order to fit the company's desires?
a)
0 to
25
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View Full DocumentSTATS TEST 2
b)
26 to
90
c)
91 to
96
d)
97 to
190
e)
191
to
270
*
5.
[1 point]
Kelly averages 3 finished accounts a day. Her standard deviation is 3 accounts per day and we
want the probability that Kelly will finish between 6 and 9 accounts in a day. The probability that
Kelley will finish between 6 and 9 accounts will be.
..
a)
Less than .20
b)
Greater than .21 but less than .40
c)
Greater than .41 but less than .60
d)
Greater than .61 but less than .80
e)
Greater than .80
6.
[1 point]
Ashley averages 6 finished accounts a day. Her standard deviation is 3 accounts per day and we
want the probability that Ashley will finish less than 3 but more than 9 accounts in a day. The
probability that Ashley will be.
..
a)
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 Fall '10
 Clark

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