Binomial and Geometric Distribution

Which of the following is NOT an assumption of the Binomial distribution?

• All trials must be independent.
• Each trial must be classified as a success or a failure.
• All trials are dependent on each other.
• The number of successes in the trials is counted.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

Is the distribution below a probability distribution? Why or why not?

• Yes. All P(x) values are between 0 and 1, and ∑P(x) = 1
• No, not all P(x) values are between 0 and 1.
• No, ∑P(x) ≠ 1.

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.1

Which one of these variables is a continuous random variable?

• The time it takes a randomly selected student to complete an exam.
• The number of tattoos a randomly selected person has.
• The number of women taller than 68 inches in a random sample of 5 women. 
• The number of correct guesses on a multiple choice test. 

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.1

Choose the correct sign

'probability more than 7'

• P(X>7)

• P(X<7)

• P(X≥7)

• P(X≤7)

Choose the correct sign

'probability less than 7'

• P(X>7)

• P(X<7)

• P(X≥7)

• P(X≤7)

Choose the correct sign

'probability at least than 7'

• P(X>7)

• P(X<7)

• P(X≥7)

• P(X≤7)

Choose the correct sign

'probability at most than 7'

• P(X>7)

• P(X<7)

• P(X≥7)

• P(X≤7)

Choose the correct sign

'probability between 4 and 9'

• P(4<X<9)

• P(4<X≤9)

• P(4≤X≤9)

• P(4≤X<9)

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?

• 0.962

• 0.132

• 0.831

• 0.250

Tags

CCSS.HSS.CP.B.9

The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school.What is the probability that exactly 2 of the first 20 blood donors have Type B blood? 

• 0.316
• 0.282
• 0.001
• Not here

Tags

CCSS.HSS.CP.B.9