Atotal of 30 bears consisting of 10 red bears, 10 yellow bears, and 10 blue bears are randomly arranged in a bucket. a child begins grabbing the bears at random, with all selections equally likely. the bears are selected "without replacement", i. e., she never puts the bears back after she grabs them. let x denote the number of bears that she grabs before the first red bear appears (but not including the first red bear itself) 3

a. find e(x) 3
b. find var (x)

Pj is decorating pupcakes for rocky's birthday party. her color scheme is black, purple, and green. she will use this spinner to determine the color of sprinkles on each pupcake. which model shows the probability of randomly landing on each color?

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.