View Attempt 1 of 1
Title:
MTH 316 Quiz 8.3 and 9.1
Started:
November 22, 2010 7:09 PM
Submitted:
November 22, 2010 7:18 PM
Time spent:
00:08:37
Total score:
8/10 = 80%
Total score adjusted by 0.0
Maximum possible score: 10
Done
1.
For a binomial experiment with 450 successes out of 500 trials, what is a point estimate for the
probability of success
p
on a single trial? Round your answer to two decimal places.
Student
Response
Value
Correct Answer
Feedback
1.
0%
2.
0%
3.
0%
4.
100%
5.
0%
Score:
1/1
Comments:
2.
Suppose you want to conduct a survey to determine the proportion of people who favor a proposed
tax policy. How does increasing the standard deviation affect the size of the margin of error?
Student
Response
Value
Correct Answer
Feedback
1. Increasing
the
standard
deviation
increases
the size of
the
margin of
error.
100%
2. Increasing
the
standard
deviation
decreases
the size of
the
margin of
0%
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Student
Response
Value
Correct Answer
Feedback
error.
Score:
0/1
Comments:
3.
In a random sample of 69 professional actors, it was found that 21 were extroverts. Let
p
represent
the proportion of all actors who are extroverts. Find a point estimate for
p.
Student
Response
Value
Correct Answer
Feedback
1. 48
0%
2. 0.304
100%
3. 0.848
0%
4. 0.696
0%
5. 0.152
0%
Score:
1/1
Comments:
4.
In a random sample of 517 judges, it was found that 286 were introverts. Let
p
represent the
proportion of all judges who are introverts. Find a point estimate for
p
. Round your answer to four
decimal places.
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 Fall '10
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 Statistics, Probability, Correct Answer, Statistical hypothesis testing, bank stocks, View Attempt

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