A roulette wheel has 38 slots in which the ball can land. Two of the slots are green, 18 are red and 18 are black. The ball is equally likely to land in any slot. The roulette wheel is going to be spun twice and the outcomes of the two spins are independent. A. The probability that it lands on...

A hamburger chain found that 75% of all customers use mustard, 80% use ketchup, and 65% use both, when ordering a hamburger. What are the probabilities that a)A ketchup-user uses mustard? b)A mustard-user uses ketchup? Thirty percent of the managers in a certain...

class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 40 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is

Chose a point at random in a square with sides 0<x<1 and 0<y<1. Let X be the x coordinate and Y be the y coordinate of the point chosen. Find the conditional probability P(y<1/2 / y>x).

Assume that the Navy football team has a 60% chance of beating the Army football team every time they play, and that the result of each game is independent of the results of all the other games (and assume there can be no tie games). If the Army and Navy play 10 games, what is the probability...