# Binomial Distribution - Examples

Now I look at using the formula in solving the following questions. You may like to try these before looking at the tutorial and worked solution.

(1)

The manufacturer of a bag of sweets claims that there is a 90% chance that the bag contains some toffees. If 20 bags are chosen. What is the probability that

(i) all the bags contain toffees

(ii) more than 18 bags contain toffees

(2)

In clinical trials a certain drug has an 8% success rate of curing a known disease. If 15 people are known to have the disease. What is the probability of at least 2 being cured.

**"
You got me from a U to an A
"**

With over 2800 videos made so far, please help me to continue with this project and keep the site free for all to benefit from. More ...

Get the ExamSolutions Apps for iOS / Android

Download videos

View later when offline.