# Psych 625 Statistics for the Behavior Sciences Entire Course

4464 Words Feb 19th, 2015 18 Pages
PSYCH 625 Statistics for the Behavior Sciences Entire Course
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–1.6
82.0
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1.8
69.0
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–0.5
85.0
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1.7
72.0
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3. Questions 3a through 3d are based on a distribution of scores with and the standard Draw a small picture to help you see what is required.
a. What is the probability of a score falling between a raw score of 70 and 80?
b. What is the probability of a score falling above a raw score of 80?
c. What is the probability of a score falling between a raw score of 81 and 83?
d. What is the probability of a score falling below a raw score of 63?
4. Jake needs to score in the top 10% in order to earn a physical fitness certificate. The class mean is 78 and the standard deviation is 5.5. What raw score does he need?
5. Who is the better student, relative to his or her classmates? Use the following table for information.
Math
Class mean
81
Class standard deviation
2
Class mean
87
Class standard deviation
10
Raw scores
Math score
Average
Noah
85
88
86.5
Talya
87
81
84
Z-scores

Math score