You sold your friend a raffle ticket for $1. If his ticket is selected from the 1000 sold, he will win $500. What is the expected value of his net gain?
0 -$0.10
-$0.99
0 -$0.50
0 $0.05

If eh = hg and hg=16, find the diameter of k

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?