1 2 3 4 P(X) 0.15 0.25 0.30 0.20 0.10 a) Find the mean and standard deviation of the number of hours of study. b) If 6 students are selected from this university, what is the probability that 4 will be found to study 3 hours each day?

1 2 3 4 P(X) 0.15 0.25 0.30 0.20 0.10 a) Find the mean and standard deviation of the number of hours of study. b) If 6 students are selected from this university, what is the probability that 4 will be found to study 3 hours each day?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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[4+2=6 pts] The following table gives the distribution of the number of hours students study each day (X) in a certain university.
1
3
4
P(X)
0.15
0.25
0.30
0.20
0.10
a) Find the mean and standard deviation of the number of hours of study.
b) If 6 students are selected from this university, what is the probability that 4 will be
found to study 3 hours each day?

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