Math 445 Lab 5
Problem 1
In the city of Bangalore the probabilty of rain on any given day is 29%. What is the probability that it will rain on exactly 4 days in a given week?
Problem 2
Two couples and one single person are seated at random in a row of five chairs. What is the probability that neither of the couples sits together in adjacent chairs?
- 1/5
- 1/4
- 3/8
- 2/5
- 1/2
Problem 3
A fair coin is tossed 5 times. What is the probability of getting at least three heads on consecutive tosses?
- 2/16
- 1/4
- 7/24
- 5/16
- 15/32
Problem 4
If you roll two dice repeatedly, what is the probability of rolling a sum of 4 before rolling a sum of 7?
Problem 5
Students in a class are selected at random, one after the other, from a class consisting of 7 boys and 8 girls. What is the probability that boys and girls in the class alternate starting with a girl first?
Problem 6
A white urn contains 10 white marbles and a black urn contains 10 black marbles. First, a marble is selected at random from the white urn and placed in the black urn. Then, a marble is selected at random from the black urn and placed in the white urn. Finally, a marble is selected at random from the white urn. What is the probability that the marble selected is white?
