Let Y have density function f (y) = $ cye−2y , 0 ≤ y ≤ [infinity], 0, elsewhere. a Find the value of c that makes f (y) a density function. b Give the mean and variance for Y . c Give the moment-generating function for Y .

Find an equation for the linear function which has slope -10 and x-intercept -7

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal