When you use the normal distribution to find a probability for a binomial random variable, which of the following is true?

Group of answer choices:

You needed np and np(-p) to be less than 10.

None of the other choices is correct

You get an approximate answer.

You are making a mistake.

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If you roll a die and record the outcome each time for 25 rolls, do the results have a binomial distribution?

Group of answer choices:

Yes

No

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Bob guesses on every question of a multiple choice test that has 4 choices for each question, and 100 questions. What is the standard deviation of X = number of correct answers?

Group of answer choices:

25

18.75

4.33

5

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For which value of p is the variance of X the highest when X is binomial?

Group of answer choices:

None of the other choices is correct

0

1

.5

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Suppose X = the number of women in a sample of 20 people who are friends with each other. X is not binomial. Why not?

Group of answer choices:

Results are not independent

p is not 1/2

n is not a fixed number