Question
In: Statistics and Probability
A professor prepares ten questions for an exam. He makes multiple exams from these ten questions,...
A professor prepares ten questions for an exam. He makes
multiple exams from these ten questions, so students do not all
have the same test. On each test, he randomly selects five of the
ten questions.
a. How many different exams can the professor make assuming
two exams with the same questions in different orders are counted
as the same exam? Show the calculations used to determine the
solution.
b. How many different exams can the professor make assuming
two exams with the same questions in different orders are counted
as different exam? Show the calculations used to determine the
solution.
Solutions
orchestra answered 1 year agoRelated Solutions
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a professor has a bias towards selecting the answer "B" on multiple-choice exams. Evaluate this claim...
a professor has a bias towards selecting the answer "B" on
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data:
1 C
2 B
3 D
4 B
5 B
6 E
7 E
8 D
9 C
10 B
11 A
12 C
13 A
14 B
15 E
16 C
17 B
18 E
19 C
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21 D
22 E
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1. what is H0 and H1...
A professor is interested in determining how difficult his exams are. He decides to examine past...
A professor is interested in determining how difficult his exams
are. He decides to examine past grades on his first exam, the
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Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a...
Professor Fair believes that extra time does not improve grades
on exams. He randomly divided a group of 300 students into two
groups and gave them all the same test. One group had exactly 1
hour in which to finish the test, and the other group could stay as
long as desired. The results are shown in the following table. Test
at the 0.01 level of significance that time to complete a test and
test results are independent.
Time
A...
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