SOLUTION: Suppose the scores in the mathematics exam are normally distributed. If the exam bhas a mean score of 25, and a standard deviation of 5,what is the probability that if you take the

Question 1178759: Suppose the scores in the mathematics exam are normally distributed. If the exam bhas a mean score of 25, and a standard deviation of 5,what is the probability that if you take the exam you will get a score higher than 30 points?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


Hi
normally distributed:   µ = 25 and σ = 5
Using a TI 0r similarly an inexpensive calculator like Casio fx-115 ES plus:
P(x> 30) = 1 - P(x ≤ 30) = 1 - normalcdf(-9999,30,25,5) = 1- .8413 = .1587
Wish You the Best in your Studies.

RELATED QUESTIONS
Solve each problem. 1. Your monthly electric bill has a mean of ₱120.00. what is the... (answered by CPhill,ikleyn)

Suppose the scores in statistics exam are normally distributed. If the exam has a mean... (answered by ewatrrr)

A university mathematics department gives a freshman calculus examination that allows... (answered by Boreal)

Exam scores are normally distributed with a mean of 81 and a standard deviation of 9.... (answered by stanbon)

Scores on a certain exam are normally distributed with a mean of 78 and a variance of 25. (answered by stanbon)

Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. (answered by rothauserc)

Suppose ACT Mathematics scores are normally distributed with a mean of 20.8 and a... (answered by Boreal)

Hi. Please help me solve stats question Suppose scores on exams in statistics are... (answered by Theo)

A professor gives an exam to one of their classes. Suppose the test scores were normally... (answered by reviewermath)