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- 1. Multiple Choice
What is the formula to find the z-score for population?
z=X-M
z=σ-M/μ
z/M=μ
z=X-μ/σ
- 2. Multiple Choice
The sign of the z-score indicates whether the location is above(positive) or below(negative) the mean.
True
False
- 3. Multiple Choice
Find the z-score value corresponding if the location is below the mean by 2 standard deviations
+2.00
-2.00
+1.25
-1.00
- 4. Multiple Choice
Find the z-scores value corresponding if the location is above the mean by 1/2 standard deviations
-0.50
+1.00
+0.50
-1.00
- 5. Multiple Choice
Find the Z-score.
Mean = 22
Standard Deviation: 3.1
x = 29
2.26
16.45
-2.26
1.26
- 6. Multiple Choice
Find the Z-score.
Mean = 21
Standard Deviation: 1.3
x = 22
0.77
5.33
1.07
1.26
- 7. Multiple Choice
Find the Z-score.
Mean = 27
Standard Deviation: 1.4
x = 11
-11.43
7.85
-2.33
4.16
- 8. Multiple Choice
Find the z-score.
Mean = 38
Standard Deviation: 1.2
x = 42
3.33
-3
3.03
-3.33
- 9. Multiple Choice
Find the z-score.
Mean = 45
Standard Deviation: 2.1
x = 50
2.38
3.00
3.08
2.33
- 10. Multiple Choice
Find the z-score.
Mean = 40
Standard Deviation: 1.4
x = 42
1.43
1.28
-1.4
1.24
- 11. Multiple Choice
Find the z-score.
Mean: 22.8
Standard Deviation: 7
x = 20
-0.4
17.2
22.04
32.5
- 12. Multiple Choice
Find the z-score.
Mean = 25
Standard Deviation: 7
x = 9.6
-2.2
-36
5.2
23.46
- 13. Multiple Choice
Find the z-score.
Mean: 16
Standard Deviation: 4
x = 11
-1.25
+1.25
16
21
- 14. Multiple Choice
Find the z-score.
Mean: 29.8
Standard Deviation: 7
x = 20
-1.4
10.2
-21
35
- 15. Multiple Choice
A data set has a mean of 290 and a standard deviation of 20. Calculate the z-score for 265.
- 16. Multiple Choice
A data set has a mean of 20 and a standard deviation of 3. Calculate the z-score for 23.
- 17. Multiple Choice
298
296
220
380
- 18. Multiple Choice
It means you did better than zero people.
It means you scored the same grade as the average grade.
It means you earned a zero on the quiz.
It means the average score was a zero.
- 19. Multiple Choice
Use the image of the normal graph provided. What is the value of the mean?
6
34
52
70
- 20. Multiple Choice
Use the image of the normal graph provided. What is the value of the standard deviation?
6
12
36
18
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