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3 votes
On a quiz there are four multiple-choice questions worth 3 points each and two true/false questions

worth 1 point each. Each multiple-choice question has five possible choices. If a student randomly
guesses on each question, what is the expected value of the student's score on the test?
2.8
5.4
3.4
1.8
Can anyone help me ples?

User Kemenaran
by
4.7k points

2 Answers

4 votes

Answer:

3.4

Explanation:

Since we have given that

Number of multiple choice question = 4

Number of true false questions = 2

Number of points for each multiple choice question = 3

Number of points for each true false question = 1

Number of choices in multiple choice = 5

Probability of getting correct answer in multiple choice question = 1/5

Probability of getting correct answer in true false question = 1/2

answer would be 17/5 which is equal to 3.4

User Smackcrane
by
6.2k points
2 votes

Answer:

3.4

Explanation:

User Evan Kennedy
by
5.3k points