Binomial Distribution Functions
This function is used when the keyword "exactly" is in the question
What is binompdf?
This function is used when you find the area of a shaded region/under the standard normal curve
What is normalcdf?
This is the probability of a baseball player who has a 30% chance of hitting the ball each at-bat, and
in 10 at-bats, he gets more than 4 hits.
What is .1503?
This is the probability of the area of the image shown, with the mean being 0 and standard deviation being 1 (2a)
What is .9025?
This function is used when the keyword "less than" is in the question
What is binomcdf? (X-value is one below what the question asked)
This function is used when you are finding the indicated z-score
What is invNorm?
This is the probability that A basketball player makes 75% of her free throws. In a game, she takes 12 shots, and she makes exactly 9 of them?
What is .2581?
This is the probability of the area of the image shown, with the mean being 0 and standard deviation being 1 (2b)
What is .7881?
This function is used when the keyword "at least" is in the question
What is 1-Binomcdf (X-value is one below what the question asks)
This is the standardized mean and standard deviation if the question does not specify it
What is the mean=0 and standard deviation=1?
This is the probability that 59% of men considering themselves as baseball fans, you randomly select 10 men to survey, and less than 8 are fans
What is .8483?
This is the probability of the area of the image shown, with the mean being 76 and standard deviation is 10 (4a)
What is .0179?
This function is used when the keyword "at most" is in the question
What is binomcdf (everything stays the same)
What is subtract the area from 1?
This is the probability that 3% of eggs in a store are cracked, and if you buy two dozen eggs, at least one of your eggs are cracked
What is .5186?
This is the indicated z-score shown in the image, with the mean being 0 and standard deviation being 1 (3a)
What is -.39
This function is used when the keyword "more than" is in the question
What is 1-binomcdf (everything stays the same)
This is the function that is never used in either binomial or normal distributions
What is normalpdf?
This is the probability where A company finds that 70% of emails sent to customers are opened, and if the company sends 50 emails, at least 40 are opened?
What is .0789?
This is the indicated z-score of the image shown, with the mean being 0 and standard deviation being 1 (3b)
What is 1.41?