Description
Connect problem set issues.
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1. The director of admissions at Kinzua University in Nova Scotia estimated the distribution of
student admissions for the fall semester on the basis of past experience.
Admissions
Probability
1,090
0.5
1,300
0.2
1,640
0.3
1. What is the expected number of admissions for the fall semester?
Expected number of admissions
2. Compute the variance and the standard deviation of the number of admissions. (Round your
standard deviation to 2 decimal places.)
Variance
Standard deviation
2.
value:
10.00 points
The Internal Revenue Service is studying the category of charitable contributions. A sample of 32 returns
is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more
than $100,000. Of these 32 returns, 7 had charitable contributions of more than $1,000. Suppose 6 of
these returns are selected for a comprehensive audit.
a You should use the hypergeometric distribution is appropriate. Because
b. What is the probability exactly one of the six audited had a charitable deduction of more than
$1,000? (Round your answer to 4 decimal places.)
Probability
c. What is the probability at least one of the audited returns had a charitable contribution of more than
$1,000? (Round your answer to 4 decimal places.)
Probability...