Binomial PDF

Harrison has an attendance rate of 25%. Find the probability Harrison will attend exactly 4 classes out of 10 class meetings

Alexa is always "in class" but only answers questions at a 60% rate. If i call on Alexa 12 times, what's the probability she will answer 8 times?

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 5 questions correct? (You need to figure out the p value first. It is not given to you.)

• 0.962

• 0.004

• 0.831

• 0.250

Salim has a flock of 300 chickens, 15% of which are infected with a virus. He plans on taking an SRS (simple random sample) of 7.
Find the probability that exactly 4 of the 7 chickens sampled have the virus.
Write your answer in 3 significant figures. 

You flip a coin 20 times. What is the probability of getting exactly 3 heads?

• BinomPDF

• BinomCDF

• GeometPDF

• GeometCDF

What function would you use to solve this question: You flip a coin 20 times. What is the probability of getting at least 10 heads?

• 1 - BinomCDF and 1 less the x value

• 1 - BinomCDF

• GeometPDF

• 1 - GeometCDF

What function would you use to solve this question:

You flip a coin 20 times. What is the probability of getting at most 4 heads?

• 1 - BinomCDF and 1 less the x value

• BinomPDF

• GeometPDF

• BinomCDF

What function would you use to solve this question: You flip a coin 100 times. What is the probability of getting at least 50 heads?

• BinomCDF and 1 less the x value

• BinomCDF

• GeometPDF

• GeometCDF

Find the value of a.

• 0.4219

• 0.7032

• 0.8438

• 1.0000

Binomial and negative binomial are examples of ______ distributions.

• discrete

• negative

• continuous

• positive