Normal distribution is a probability distribution of ________ random variable?

Coefficient of variation (C.V) is given below:________?

Which of the following is not a condition of the binomial distribution?

If a card is chosen from a standard deck of cards, what is the probability of getting a five or a seven?

A ________ is a heading at the top of the table describing its contents?

Since E(X) ________X is said to be unbiased estimator of the population mean?