SOLUTION: The score on a mathematics exam have a mean of 70 and a standard deviation of 8. Find the x value that corresponds to the z score -2.575.
Algebra.Com
Question 1157083: The score on a mathematics exam have a mean of 70 and a standard deviation of 8. Find the x value that corresponds to the z score -2.575.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x-mean)/sd,
-2.576=(x-mean)/7
x-mean=-18.025
x=70-18.025=51.975
RELATED QUESTIONS
The scores on a mathematics exam have a mean of 75 and a standard deviation of 6. Find... (answered by solver91311)
The scores on a mathematics exam have a mean of 69 and a standard deviation of 6. Find... (answered by stanbon)
The scores on a mathematics exam have a mean of 65 and a standard deviation of 5. Find... (answered by Boreal)
In a population of exam scores, a score of X=28 correspond to z= -1.00, and a score of... (answered by Boreal)
I really need your help in solving this problem. I appreciate your time and efforts. Have (answered by mathmate)
in a population of exam scores, a score of x=48 corresponds to z=+1.00 and a score of... (answered by stanbon)
In a population distribution, a score of X = 28 corresponds to a z = -6.00 and a score of (answered by ikleyn)
in a population distribution, a score of x=28 corresponds to z=-1 and a score of x=34... (answered by Fombitz)
IQ test scores are normally distributed with a mean of 100 and a standard deviation of... (answered by ewatrrr)