a. Consider the following distribution of a random variable
X
X
– 1
0
1
2
P(X)
1/8
2/8
3/8
2/8
Find the mean, variance and standard deviation
b. There are 6 Republican, 5 Democrat, and 4 Independent
candidates. Find the probability the committee will be made of 3
Republicans, 2 Democrats, and 2 Independent be selected?
c. At a large university, the probability that a student takes
calculus and is on the dean’s list is 0.042. The probability...