Question

Over the next four days, X is the number of days it will rain. Which statement is true about this situation?

A.) The variable X does not have a binomial distribution because P(success) is not constant.

B.)The variable X does not have a binomial distribution because there are more than two possible outcomes.

C.)The variable X has a binomial distribution. P(success)=0.5; number of trials = 4

D.)The variable X has a binomial distribution. P(success)=0.25; number of trials = 4

Answer 1

The correct answer on the test was

A.) The variable X does not have a binomial distribution because P(success) is not constant.

Answer 2

I think the correct answer from the choices listed above is option B. Over the next four days, X is the number of days it will rain. The variable X does not have a binomial distribution because there are more than two possible outcomes.  Hope this answers the question.