Binomial Distribution

Question 1

Mrs. Gomes found that 40% of students at her high school take chemistry. She randomly surveys 12 students. What is the probability that exactly 4 students have taken chemistry? Round the answer to the nearest thousandth.

Revolt · Accepted Answer

0.213

Question 2

Forty-four percent of the members of the Science Club wear blue shirts. Which of the following is a binomial experiment?

Revolt · Accepted Answer

Selecting eight members randomly and recording whether each member is wearing a blue shirt

Question 3

According to a poll, 30% of voters support a ballot initiative. Hans randomly surveys 5 voters. What is the probability that exactly 2 voters will be in favor of the ballot initiative? Round the answer to the nearest thousandth.

Revolt · Accepted Answer

0.309

Question 4

Which of the following is a binomial experiment?

Revolt · Accepted Answer

Flipping a coin 10 times and recording if it comes up heads

Question 5

Two percent of mobile phones produced at a factory are defective. Which of the following is a binomial experiment?

Revolt · Accepted Answer

Selecting 200 phones randomly and recording whether each phone is defective

Question 6

Aron flips a penny 9 times. Which expression represents the probability of getting exactly 3 heads?

Revolt · Accepted Answer

Subscript 9 Baseline C Subscript 3 Baseline (0.5) cubed (0.5) Superscript 6

Question 7

A researcher finds that 15% of all commuters in a metropolitan area take the train to work. The researcher polls 250 people in the area and asks them whether they take the train to work. What is the number of trials for this binomial experiment?

Revolt · Accepted Answer

250

Question 8

Which of the following is a binomial experiment?

Revolt · Accepted Answer

A survey asking 75 people if they like the new school building

Question 9

Thirty-three percent of all students at a high school like beef stew. Out of 300 students, 40 are selected randomly and asked whether they liked beef stew. If liking beef stew is a success, what is the probability of a failure for this binomial experiment?

Revolt · Accepted Answer

0.67

Question 10

Janie flips a coin 70 times and records if it comes up heads. If getting heads is a success, what is the probability of a failure?

Revolt · Accepted Answer

0.5

Binomial Distribution Answers

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