# Probability/Statistics

The teacher of a mathematics class has written up the final exam, but wants
the questions to be random for each student. There are 28 students in the class, and
the test has 100 questions. Each question has four possible answers.

a. After reading carefully reading the scenario, determine the number of different
final exams possible. Besides your method, are there other methods to determine
the number of outcomes?

b. For this scenario, which will work better to determine the order of the questions,

c. If a student doesn’t show up to take the test, how does that affect the number of
outcomes?

d. Suppose the teacher doesn’t end up randomizing the questions on the exam. Does
this affect the number of outcomes?

e. If each question on the test had the same answer (let’s say C), what’s the probability
that students taking the test will get all the questions right? Justify your answer.

1. 👍
2. 👎
3. 👁

1. 👍
2. 👎
👤
Ms. Sue
2. a.
There are 100! final exams possible, by permuting all 100 questions.
b. see part a.
c. The experiment is not clearly defined, so neither is the number of outcomes.
If the experiment is to determine the number of exams possible, the number of outcomes does not depend on the number of students.
If the experiments is the results of the test, then yes, the number of students affects the number of outcomes (from 28 to 27)
d. There will still be 28 outcomes.
e. It depends on how much students have studied. Quesion did not say the students answer at random.

1. 👍
2. 👎

## Similar Questions

1. ### Health

Lesson 1: Health, Fitness, and Nutrition A Final Exam Health, Fitness, and Nutrition A Unit 3: Final Exam I need help with the midterm for the class above. It has 52 questions SEND HELP lol

2. ### Math

A​ student's course grade is based on one midterm that counts as 5​% of his final​ grade, one class project that counts as 20​% of his final​ grade, a set of homework assignments that counts as 30​% of his final​

3. ### Math

In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule: The top 10% receive A's.

4. ### statistics

A​ student's course grade is based on one midterm that counts as 5​% of his final​ grade, one class project that counts as 25​% of his final​ grade, a set of homework assignments that counts as 35​% of his final​

1. ### Math

1.how many different permutations can you make with the letters in the word s e v e n t e e n ? 2.a teacher has a set of 12 probelms to use on a math exam. the teacher makes different versions of the exam by putting 10 questions

2. ### math

A student’s final grade in chemistry is determined by the following weights: Quizzes 5% Exam 1 20% Exam 2 20% Lab Reports 15% Research Paper 15% Final Exam 25% The student received the following grades: Lab reports: 75 80 70 75

3. ### math

A​ student's course grade is based on one midterm that counts as 15​% of his final​ grade, one class project that counts as 15​% of his final​ grade, a set of homework assignments that counts as 40​% of his final​

4. ### Math

In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule: The top 10% receive A's.

1. ### Statistics

In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of

2. ### ALGEBRA

Ralph needs to earn a B in his Geology class. His current test scores are 82,83, 90, and 77. His final exam is worth 4 test scores. In order to earn a Bâ€‹, Ralph's average must lie between 80 and 89 inclusive. What range of

3. ### Math

The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes and a standard deviation of 13 minutes. Answer the following questions. What is the probability of

4. ### Algebra

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student receive in order to have a final average of 76 percent? Thanks!!