18. If the mean of a test score is 30 and the standard deviation is 3.7, which score could be expected to occur less than 5% of the time? 35 25 33.8 22

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Please help me with both questions. These are just 2 and you are allowed to answer 3. Please help me asap. Thank you!

17. Using the same information in the previous number, which score has the least probability of
being chosen at random?
55
65
45
74
18. If the mean of a test score is 30 and the standard deviation is 3.7, which score could be expected
to occur less than 5% of the time?
35
25
33.8
22
Transcribed Image Text:17. Using the same information in the previous number, which score has the least probability of being chosen at random? 55 65 45 74 18. If the mean of a test score is 30 and the standard deviation is 3.7, which score could be expected to occur less than 5% of the time? 35 25 33.8 22
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