Suppose the scores on an amplitude test are normally distributed with a mean of 100 and a standard deviation of 4.6. Scores on the knowledge test or normally distributed with a mean of 70 and a standard deviation of 2.4. Felix scored 106 on the amplitude test and 75 on the knowledge test. Which statement best describes Felix’s scores on the two test comparatively?

Felix’s Z score on the amplitude test was 1.30. His z score on the knowledge test was 2.08. Felix performed better on the amplitude test, comparatively.

Felix’s Z score on the amplitude test was 1.30. His Z score on the knowledge test was 2.08. Felix performed better on the knowledge test, comparatively.

Felix’s Z score on the amplitude test was -1.30. His z score on the knowledge test was - 2.08. Felix performed better on the knowledge test, comparatively

Felix’s z score on the amplitude test was -1.30, his z score on the knowledge test was -2.08. Felix performed better on the amplitude test, comparatively

Guest Apr 10, 2019

#1**+1 **

[ 106 - 100] 6

__________ = ____ = 1.3

4.6 4.6

[ 75 - 70 ] 5

________ = ___ = 2.08

2.4 2.4

So

Felix’s Z score on the amplitude test was 1.30. His Z score on the knowledge test was 2.08. Felix performed better on the knowledge test, comparatively.

BTW.....I think it is "aptitude", not "amplitude"

CPhill Apr 10, 2019