Stats test 2

What are the two key properties of a discrete probability distribution?

0≤P (X = x) ≤1 and ∑P (X = xi ) = 1

Which of the following can be represented by a continuous random variable?

The average temperature in Tampa, Florida, during the month of July

Which of the following can be represented by a discrete random variable?

The number of defective light bulbs in a sample of five

Which of the following can be represented by a discrete random variable?

The number of obtained spots when rolling a six-sided die

We can think of the expected value of a random variable X as ________.

the long-run average of the random variable values generated over infinitely many independent repetitions

The expected value of a random variable X can be referred to or denoted as _________

the population mean, E(X), µ