The following is a table of probabilties calculated from a survey of BHCC students with the question asked "How many classes are you taking this semester?"

x: # of classes 1 2 3 4 5
P(x) 0.23 0.27 0.13 0.33 0.04

Using the table, find the following probabilities for a student selected at random:

a.) What is the probability that a student is taking 2 or more classes?


b.) What is the probability that a student is taking at least 3 classes?


c.) What is the probability that a student is taking more than 3 classes?


d.) What is the probability that a student is taking less than 2 classes?


e.) What is the probability that a student is taking no more than 2 clases?


f.) What is the average (mean) amount of classes a student takes at BHCC?


g.) What is the standard deviation for the amount of classes a student takes at BHCC?