Binomial Probability Table

A fair quarter is flipped three times. What is the probability of getting two or more heads?

(Enter your answer in decimal form with three decimal places)

According to a recent survey, 15% of houses in America are haunted by a ghost. If your neighborhood has 40 houses, what is the probability that 5 or more of them are haunted?

• 0.74

• 0.26

• 0.57

• 0.43

When rolling a fair die 100 times, what is the probability of rolling a "4" exactly 15 times?

• 1.0%

• 10.0%

• 25%

• 2.1%

A fair quarter is flipped thirty times. What is the probability of getting no more than 20 heads?

• 0.5

• 0.0214

• 0.979

• 0.972

An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct? (You need to figure out the p value first. It is not given to you.)

• 96.2%

• 13.2%

• 8.31%

• 25.0

When rolling two dice, the probability of rolling doubles is ⅙. Suppose that a game player rolls the dice five times, hoping to roll doubles. What is the probability the player gets doubles less than three times in 5 attempts?

• 0.161

• 0.965

• 0.015

• 0.997

Is this a probability distribution?

• No

• Yes

Find the mean (expected value) of the probability distribution.

• 85

• 83.2

• 87.1

• 84.4

Is this a probability distribution?

• No

• Yes

You are a terrible driver. Whenever you drive, there is a 70% chance that you will run over a pedestrian. If you go for a drive 15 times, what is the probability that you will run over no more than 6 pedestrians?

• 0.985

• 0.015

• 0.988

• 0.012