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Unformatted text preview: P SY3204 C HAPTER 5 QU IZ
Exhibit 55
L et's assume that the scores are normally distributed on a test with a
p opulation mean of 75 and standard deviation equal to 16.
1. Refer to Exhibit 51. What is the percentile rank of a score of 56?
11.70
Exhibit 51
A stockbroker has kept a daily record of the value of a pa rticular
stock over the years and finds that prices of the stock form a normal
d istr ibution with a mean of $8.52 with a standard deviation of $2.38.
2. Refer to Exhibit 51. The percentile rank of a price of $13.87 is
____.
98.78
3. Refer to Exhibit 51. What percentage of the distribution lies
between $5 and $11?
78.41
4. Refer to Exhibit 51. What percentage of the distribution lies
below $7.42.
32.28
5. Refer to Exhibit 51. The stock price beyond which 0.05 of the
d istribution falls is ____.
12.44
6. Refer to Exhibit 51. The percentage of scores that lie between
$9.00 and $10.00 is ____.
15.31
7. The mean of the z distribution equals ____. 0
Exhibit 54
A d ist ribution has a mean of 60.0 and a standard deviation of 4.3.
8. Refer to Exhibit 54. The raw score corresponding to a z score of
0.00 is ____.
60.0
9. Refer to Exhibit 54. The raw score corresponding to a z score of 1.51 is ____.
53.5
10. Refer to Exhibit 54. The raw score corresponding to a z score of
2.02 is ____.
68.7
11. Refer to Exhibit 54. If a population of scores is normally
d istributed, has a mean of 45 and a standard deviation of 6, the
most extreme 5% of the scores lie beyond the score(s) of ____.
56.76 and 33.24
12.The proportion of scores less than z = 0.00 is _____.
0.50
13. How much would your income be if i ts z score value was 2.58?
Cannot be determined
14. Which of the following z scores represent(s) the most extreme
value in a distribution of scores assuming they are normally
d istributed?
3.12
15. Given the following set of sample raw scores, X: 1, 3, 4, 6, 8.
W hat is the z t ransformed value for the raw score of 3?
0.52 ...
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This note was uploaded on 06/20/2011 for the course PSYCHOLOGY 3204 taught by Professor Someone during the Summer '11 term at University of Central Florida.
 Summer '11
 Someone

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