Posted by **Alejandra** on Sunday, October 24, 2010 at 7:41pm.

The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg with a standard deviation of 20 mg.

(a) What is the probability that a randomly chosen cup of home-brewed coffee will have more than 130 mg of caffeine?

(b) Less than 100 mg?

(c) A very strong cup of tea has a caffeine content of 91 mg. What is the probability that a cup of coffee will have less caffeine than a very strong cup of tea?

## Answer This Question

## Related Questions

- Stats - Instructions for the Experiment / Data Collection regarding questions 1-...
- statistics - a vending machine dispenses coffee into an 8 oz cup. the amount of ...
- intro to statistics - a vending machine dispenses coffee into an 8 oz cup. the ...
- Statistics - A vending machine dispenses coffee into a twelve-ounce cup. The ...
- math - A cup of brewed tea has 54 milligrams less caffeine than a cup of brewed ...
- statistics - A vending machine dispenses coffee into a sixteen ounce cup. The ...
- statistics - A vending machine dispenses coffee into a twelve-ounce cup. The ...
- statistics - A vending machine dispenses coffee into a twelve-ounce cup. The ...
- Introduction to statistics - A vending machine dispenses coffee into an eight-...
- Descriptive Statistics - A vending machine dispenses coffee into a twelve ounce ...

More Related Questions