20. What is the probability of z value indicated by (Z <-1.78)? d. 0.9633 a. 0.0375 b. 0.3075 c. 0.9625

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 7CC
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Question
20. What is the probability of z value indicated by (Z <-1.78)?
a. 0.0375
b. 0.3075
c. 0.9625
d. 0.9633
21. Find the probability value of (Z > -1.00).
a. 15.87%
b. 34.13%
c. 84.13%
d. 90.13%
22. Compute the probability value of (-1.35 <Z <2.75)
a. 90.85%
b. 99.70%
c. 0.9085
d. 90.79
23. The average score on Statistics and Probability First Quarterly Assessment is 35 points with a
standard deviation of 5. What is the probability that Beth's score is less than 45 points?
b. 2
a. -2
c. 2.28%
d. 97.72%
24-25. Find the z-scores that bound the middle 92.50% of the area under the standard normal curve.
d. -1.78, 1.78
a. -1.44, 144
b. -1.44,-1.78
c. 1.44, 1.78
Transcribed Image Text:20. What is the probability of z value indicated by (Z <-1.78)? a. 0.0375 b. 0.3075 c. 0.9625 d. 0.9633 21. Find the probability value of (Z > -1.00). a. 15.87% b. 34.13% c. 84.13% d. 90.13% 22. Compute the probability value of (-1.35 <Z <2.75) a. 90.85% b. 99.70% c. 0.9085 d. 90.79 23. The average score on Statistics and Probability First Quarterly Assessment is 35 points with a standard deviation of 5. What is the probability that Beth's score is less than 45 points? b. 2 a. -2 c. 2.28% d. 97.72% 24-25. Find the z-scores that bound the middle 92.50% of the area under the standard normal curve. d. -1.78, 1.78 a. -1.44, 144 b. -1.44,-1.78 c. 1.44, 1.78
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