Questions

In problems 1 - 3, classify the random variable as discrete or continuous.

1. x = The number of brothers in families with five children.

2. x = The diameter of ball bearings produced in a factory.

3. x = The number of people who like classical music in a sample of 50 people.

4. Is the following a probability distribution? Justify your conclusion.

5. Find the mean (expected value), variance, and standard deviation for the probability distribution given below.