If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Statistics and probability

Course: Statistics and probability > Unit 9

Lesson 5: Binomial random variables
Math
Statistics and probability
Random variables
Binomial random variables
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Calculating binomial probability

Google Classroom
You might need: Calculator

Problem

70% of a certain species of tomato live after transplanting from pot to garden. Najib transplants 3 of these tomato plants. Assume that the plants live independently of each other. Let X= the number of tomato plants that live.
What is the probability that exactly 2 of the 3 tomato plants live?
You may round your answer to the nearest hundredth.
P(X=2)=
  • Your answer should be
  • an exact decimal, like 0.75
Stuck?
Stuck?