Mathematics, 07.03.2020 00:01 laurieburgess804

On an exam, the average grade was 50% and the standard deviation was 13%. If we assume that the exam scores are normally distributed, calculate the following

a. What is the probability that a student scored less than 60%
b, what is the probability that a student scored at least 60%?
c. what is the probability that a student scored between 35 and 55%?
d. What is the probability that a student scored within 1 standard deviation of the mean?
e. You want to study with someone who scored more than one standard deviation above the mean. What is the probability that you will need to ask 8 people before you find someone to study with? If a student will get an A on the exam if they are above the 80th percentile, what exam score must they have achieved to get an A? f. 8. If there are 20 students in the class, what is the probability that 4 will receive an A on the exam?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:50, uehlingt39

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Answers: 2

continue

Mathematics, 21.06.2019 19:00, tylerwayneparks

Solving systems of linear equations: tables represent two linear functions in a systemöwhat is the solution to this system? 0 (10)0 (1.6)0 18,26)0 18-22)

Answers: 1

continue

Mathematics, 21.06.2019 19:30, unknown337

Complete the synthetic division problem below. what is the quotient in polynomial form 2/16 -16

Answers: 3

continue

Mathematics, 21.06.2019 20:00, alishbaqadeer1

How do i solve uniform motion problems?

Answers: 2

continue

You know the right answer?

On an exam, the average grade was 50% and the standard deviation was 13%. If we assume that the exam...