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 2 years agoRelated Solutions
Professor Nord stated that the mean score on the final exam from all the years he...
Professor Nord stated that the mean score on the final exam from
all the years he has been teaching is a 79%. Colby was in his most
recent class, and his class’s mean score on the final exam was 82%.
Colby decided to run a hypothesis test to determine if the mean
score of his class was significantly greater than the mean score of
the population. α = .01. If p = 0.29
What is the mean score of the population?...
Guessing on Exams Suppose, you are taking an exam with 10 questions and you are required...
Guessing on Exams Suppose, you are taking an exam with 10
questions and you are required to get 7 or more right answers to
pass.
With a 10-question true/false test, what is the probability of
getting at least 7 answers correct by guessing?
With a 10-question multiple-choice test where there are three
possible choices for each question, what is the probability of
getting at least 7 answers correct by guessing? Only one of the
choices is correct for each question....
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
multiple-choice exams. Evaluate this claim at the 95% and
99% confidence levels.
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
20 C
21 D
22 E
23 B
24 D
25 B
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
content of which has remained more or less the same over the last
several years. In a random sample of 15 exam scores, the sample
mean was 75 with a sample standard deviation of 5. The upper bound
of a 95% confidence interval for the true mean, to two decimal
places, would therefore, be which of the following?...
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...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- D. Explain what it means for recommendations to be specific and actionable. E. Discuss how charts...
- Capital Toys’ management is considering eliminating product A, which has been showing a loss for several...
- Computer Networks IT 210 Please Use your own words . sorry No handwriting no copy paste...
- The Coronavirus will obviously impact the economy of big organizations like FIFA or the NBA but...
- Question: what is the difference between rights of assertion and observation assertion. Include which financial statements...
- how to read a csv file in php and make a html table? I can't use...
- ABC Inc. is evaluating a project that will increase annual sales by $230,000 and annual cash...
ADVERTISEMENT