torreslindsey08Lv1

19 Oct 2022

1. (13 pts) Let x represents the number of toppings for a large pizza at an Italian cafe. The probability distribution of X appears in the accompanying table.

X	0	1	2	3	4
P(x)	0.30	0.40	0.20	?	0.04

 

a. What is the probability that the number of toppings on a randomly selected pizza is 3? (4 pts.)

b. What is the probability that the number of toppings on a randomly selected pizza is at most 2? (4 pts.)

c. Compute the mean and standard deviation of X. Round to two decimal places. (5 pts.)