A game consists of randomly choosing a bag (labelled 1, 2 or 3) out of a choice of 100, and then again randomly, picking a ball (red or black) from it. Each bag has the same total number of balls (10)

a) complete the tree diagram

b) Work out the probability that a player will select a red ball

c) the same player is going to play the game 200 times consecutively. How many black balls should he expect to pick?

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Can someone explain to me how to do

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?