SOLUTION: On a History test, where the student grades are distributed normally, the average grade was 78 and the standard deviation was 10. Determine the numeric score of two students whose

Question 440006: On a History test, where the student grades are distributed normally, the average grade was 78 and the standard deviation was 10. Determine the numeric score of two students whose standard scores (a.k.a. z-scores) were -0.6 and 1.2, respectively.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
On a History test, where the student grades are distributed normally, the average grade was 78 and the standard deviation was 10. Determine the numeric score of two students whose standard scores (a.k.a. z-scores) were -0.6 and 1.2, respectively.
--------------
Since z = (x-u)/s, x = zs + u
-----
Your Problem:
x(-0.6) = -0.6*10+78 = 72
--------------
x(1.2) = 1.2*10 + 78 = 90
==============================
Cheers,
Stan H.
RELATED QUESTIONS
The mean score on a history test was 74.3 and the standard deviation was 5.7. Assuming... (answered by stanbon)

The scores on a statistics test were normally distributed with a mean of 78 and a... (answered by Theo)

How to do this: Scores on a test are normally distributed with a mean of 78 and a... (answered by Theo)

15. A set of final examination grades in a home economics course is normally distributed, (answered by edjones)

Scores on a history test are normally distributed with a mean of 120 and a standard... (answered by ewatrrr)

There are 330 students at Valley Central High School enrolled in Chemistry. On the April... (answered by VFBundy)

An art history professor assigns letter grades on a test according to the following... (answered by Boreal)

Student test grades were normally distributed, and grades between 62 and 86 were within... (answered by ewatrrr)

The class average on a test was 81, with a standard deviation of 2.6. Find the... (answered by stanbon)