Binomial Distribution

Question 1

Let k be the number of successes (green) when the spinner is spun 4 times. The graph shows the distribution of k. Slide the slider to change p. What effect does this have on the distribution? Check all of the boxes that apply.

Revolt · Accepted Answer

The graph is always a binomial distribution.; No matter what p is, k can always be 0, 1, 2, 3, or 4.; For values of p close to 0.5, the distribution is more symmetric.; For values of p close to 1, you’re most likely to get 3 or 4 successes in 4 spins.

Question 2

Suppose you spin the spinner 5 times. means “the probability of getting a vowel on exactly 3 of the spins.”

Revolt · Accepted Answer

P(3 successes)

Question 3

What is the probability of getting a vowel (a success) for the spinner shown?

Revolt · Accepted Answer

1/3

Question 4

Which probabilities do you need in order to calculate P(getting A on 2 or fewer spins)?

Revolt · Accepted Answer

P(0 successes); P(1 success); P(2 successes)

Question 5

P(getting A on 2 or fewer spins) =

Revolt · Accepted Answer

0.79

Binomial Distribution Answers

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