Refer to Figure 22-4. Which of the following combinations of points illustrates changes in the Soviet Union's economy from 1950 to 1980?

The sample average is a random variable and

A) is a single number and as a result cannot have a distribution. B) has a probability distribution called its sampling distribution. C) has a probability distribution called the standard normal distribution. D) has a probability distribution that is the same as for the Y1,..., Yn i.i.d. variables.

The government's fixing of exchange rates is not unlike the government's fixing of other prices, such as the price of rental units

Indicate whether the statement is true or false