According to the probability distribution below, what is the expected value of X? (1 point) X 0 1 2 3 4 5
P(X) 0.2 0.1 0.23 0.1 0.17 0.2
The expected value is 0.2
The expected value is 5
The expected value is 2.54
The expected value is 2.5

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Solve the system of equations y= 3/2 - 1, -x+ y =-3