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9. X is a normal distributed variable with mean μ = 30 and standard deviation a = 4. Find Z: A. 3.5 B. 4 C. 30 D. 2.5 10. Find the mean of the discrete random variable X whose probability distribution is A. 1350 B. 1.135 C. 0.135 D. 1.350 2 -2 1 P(r) 0.21 0.34 3.5 2 0.24 0.21

9. X is a normal distributed variable with mean μ = 30 and standard deviation a = 4. Find Z: A. 3.5 B. 4 C. 30 D. 2.5 10. Find the mean of the discrete random variable X whose probability distribution is A. 1350 B. 1.135 C. 0.135 D. 1.350 2 -2 1 P(r) 0.21 0.34 3.5 2 0.24 0.21

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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please sir solve these two questions 

9. X is a normal distributed variable with mean μ = 30 and standard deviation a = 4. Find Z: A. 3.5 B. 4 C. 30 D. 2.5 10. Find the mean of the discrete random variable X whose probability distribution is A. 1350 B. 1.135 C. 0.135 D. 1.350 2 -2 1 3.5 2 P(x) 0.21 0.34 0.24 0.21
Transcribed Image Text:9. X is a normal distributed variable with mean μ = 30 and standard deviation a = 4. Find Z: A. 3.5 B. 4 C. 30 D. 2.5 10. Find the mean of the discrete random variable X whose probability distribution is A. 1350 B. 1.135 C. 0.135 D. 1.350 2 -2 1 3.5 2 P(x) 0.21 0.34 0.24 0.21
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