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Normal Distribution Review
Test Description: Normal distribution, empirical rule, z-scores
Instructions: Answer all questions to get your test result.
1) What is the shape of a normal distribution?
A
bell curve
B
parabola
C
right triangle
D
circle
2) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. What value is +1 standard deviation from the mean?
A
43
B
34
C
31
D
40
3) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. What value is -2 standard deviations from the mean?
A
43
B
40
C
34
D
31
4) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. What value is +3 standard deviations from the mean?
A
28
B
43
C
31
D
46
5) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. What value is -3 standard deviations from the mean?
A
28
B
43
C
46
D
31
6) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. Between what two values do 68% of data lie?
A
34-40
B
28-46
C
31-43
D
none
7) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. Between what two values do 95% of data lie?
A
28-46
B
34-40
C
31-43
D
none
8) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. Find the z-score for 50.
A
-3.3
B
4.3
C
2.7
D
-1.7
9) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. Find the z-score for 32.
A
2.7
B
-3.3
C
4.3
D
-1.7
10) A set of data with a mean of 37 and standard deviation of 3 is normally distributed. Find the z-score for 27.
A
4.3
B
-3.3
C
2.7
D
-1.7
*select an answer for all questions
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