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- 1. Multiple Choice
Find the z-score for 75 given a mean of 60 and a standard deviation of 6.
-2.5
2.5
-1.15
1.15
- 2. Multiple Choice
Find the z-score for 48 given a mean of 50 and a standard deviation of 5.
2.5
-2.5
-0.4
0.4
- 3. Multiple Choice
Find the z-score for 258 given a mean of 273 and a standard deviation of 5.
3
-2
2
-3
- 4. Multiple Choice
Find the z-score for 62 given a mean of 30 and a standard deviation of 20.
1.6
-1.6
11.6
-11.6
- 5. Multiple Choice
Find the area under the standard normal curve that lies to the left of z=2.1.
1.79%
-1.79%
98.21%
0.98%
- 6. Multiple Choice
Find the area under the standard normal curve that lies to the right of z=-0.67.
63.42%
74.86%
25.14%
50%
- 7. Multiple Choice
Find the area under the standard normal curve that lies between z=-0.5 and z=1.5.
62.46%
72.47%
5.40%
62.47%
- 8. Multiple Choice
What percentage of scores falls within 3 standard deviations of the mean?
68%
34%
99.7%
95%
- 9. Multiple Choice
Find the z-score with 4-% of the observations falling below it.
z=-0.25
z=-0.33
z=0.25
z=0.33
- 10. Multiple Choice
Find the z-score with 20% of observations falling above it.
z=-0.84
z=1.84
z=-1.84
z=0.84
- 11. Multiple Choice
IQ tests have a mean of 100 and SD of 16. Einstein's IQ was 160. What is the z-score of his IQ?
1.75
3.75
0.75
2.75
- 12. Multiple Choice
Pat and Tom took a test with mean 80 and SD 9. Pat scored a 76; Tom scored a 94. Find the percent of people between their scores.
68.78%
63.29%
65.14%
34.25%
- 13. Multiple Choice
A 5th grader takes a test (mean=125, SD=15) and scores a 148. What is the child's percentile rank?
93%
68%
7%
99.7%
- 14. Multiple Choice
Z-score of 2.5 on an IQ test is considered a genius (mean=100, SD=16). What score makes someone a genius? Hint: SOLVE for X
89.2
130
99.38
140
- 15. Multiple Choice
Mean=11, SD=30. Find the raw score (X) for z=-1.5
35
45
55
65
- 16. Multiple Choice
Test has a mean of 40 and a standard deviation of 10. What is the percent of people that scored above 62?
1.39%
45.34%
98.41%
22.34%
- 17. Multiple Choice
Test has a mean of 40, standard deviation of 10. What is the percent of people with a score below 37?
52.97%
31.53%
48.99%
38.21%
- 18. Multiple Choice
A test has a mean of 40 and a standard deviation of 10. What is the percent of people that scored between 30 and 40?
68%
34%
13.6%
100%
- 19. Multiple Choice
Mean=65 mph, SD=2 mph. What speed is the 95th percentile?
95 mph
68 mph
73 mph
69 mph
- 20. Multiple Choice
Find the mean height of the basketball players in cm: 188, 189, 192, 193, 194, 194, 195, 195
193.5
195
192.5
194
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