(d) How high a score must you have in order to be in the top quarter of the population in social insight?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Only looking for d) on the attached.

The Chapin Social Insight Test evaluates how accurately the subject appraises other people. In the reference population
used to develop the test, scores are approximately normally distributed with mean 30 and standard deviation 3. The range
of possible scores is 0 to 48.
(a) What proportion of the population has scores below 27 on the Chapin test?
0.15866
(b) What proportion has scores below 21?
0.99875
(c) What proportion has scores above 36?
0.02275
(d) How high a score must you have in order to be in the top quarter of the population in social insight?
**
Coucym
eliste0 nemnpleeA
ebo3
Transcribed Image Text:The Chapin Social Insight Test evaluates how accurately the subject appraises other people. In the reference population used to develop the test, scores are approximately normally distributed with mean 30 and standard deviation 3. The range of possible scores is 0 to 48. (a) What proportion of the population has scores below 27 on the Chapin test? 0.15866 (b) What proportion has scores below 21? 0.99875 (c) What proportion has scores above 36? 0.02275 (d) How high a score must you have in order to be in the top quarter of the population in social insight? ** Coucym eliste0 nemnpleeA ebo3
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