SOLUTION: Given a normal distribution or raw scores on an exam in which the mean =80 and sigma=7.5, determine the following: A) What is the percent of respondents who scored 60 or less.

Algebra.Com
Question 744392: Given a normal distribution or raw scores on an exam in which the mean =80 and sigma=7.5, determine the following:
A) What is the percent of respondents who scored 60 or less.
The probability of locating a respondent who scored 60 or less.
The percent of respondents who scored between 80 and 90.
The probability of locating a respondent who scored between 80 and 90
The percent of respondents who scored 85 or more

Answer by Tokuko(1)   (Show Source): You can put this solution on YOUR website!
a. 38%
b. .38
c. 40.82%
d. .41
e. 25.14%

RELATED QUESTIONS

Please help me to solve this two students take a college entrance exam known to have a... (answered by Solver92311)
Two students take a college entrance exam known to have a normal distribution of scores.... (answered by Fombitz)
Two students take a college entrance exam known to have a normal distribution of scores.... (answered by stanbon)
Given a frequency distribution of 10,000 scores, which approximates the normal curve and... (answered by trsomas23@gmail.com)
Normal distribution of scores in which the mean is 100 ad the standard deviation is 20.... (answered by mking220)
A class is given an exam. The distribution of the scores is normal. The mean score is 80... (answered by Boreal)
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a... (answered by stanbon)
On a test, the raw scores have a mean of 35 and a standard deviation of 6. Assuming these (answered by ewatrrr)
Suppose that historically the final exam scores for Bus 101 follow the Normal... (answered by Boreal)