MATLAB: An Introduction with Applications
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ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:9-10. Which of the following best describes the given shaded region under the normal curve?
c. to the left of z=1
a. To the right of z = 1
b. Above z=-1
d. between z = -1 and z = 1
11. Find the area of the shaded region of the given figure
a.
0.1587
c. 0.3413.
b. 0.3907
d. 0. 8413
12. Find the area under the standard normal curve between z = 0 and z= 3.
a. 0.4987
b. 0.5000
c. 0.9987
d1.4987
13. Find the area under the normal curve from z=0.83 to z= 1.84.
a..0.0007
b..0.1704
c..0.7967
d. 0.9671
14. Given: x=40; μ = 50; o 10. Find the z score.
a. -2
b. -1
c. 1
d. 2
15. Given: x= 35; p = 15; o 4. Find the z score.
a. -5
b. 5
c. 10 d. 15
16. Given: z-2.25; μ=60; a= 8. Find the value of x
a. 18 b. 42 c. 78 d. 102
17. If the scores in a Probability and Statistics test are normally distributed with a mean of 25 and
standard deviation of 3.5. What is the z-score for a score of 30?
a. 1.43
b. 1.06
c. 0.72
d. -1.43
18. Anna, an ALS student, obtained a z-score of 2.35 in an achievement test that is normally
distributed with a mean grade of 83 and standard deviation of 5. What was Anna's grade in the
achievement test?
a. 71.25
b. 80.65
c. 85.35
d. 94.75
19. In a normal distribution with a mean of 69 and standard deviation of 15, what does a z-score of -
2 indicates?
a. It indicates that the score is equal to 39.
b. It indicates that the score is above the mean.
c. It indicates that the score is 39 less than the mean
d. It indicates that the difference between the score and the mean is 39.
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