The assets (in billions of dollars) of the four wealthiest people in a particular country are

31,29,24,18.

Assume that samples of size

n=2

are randomly selected with replacement from this population of four values.

Question content area bottom

Part 1

a. After identifying the 16 different possible samples and finding the mean of each sample, construct a table representing the sampling distribution of the sample mean. In the table, values of the sample mean that are the same have been combined.

x	Probability		x	Probability
31	one sixteenth116		24.5	one eighth18
30	one eighth18		24	one sixteenth116
29	one sixteenth116		23.5	one eighth18
27.5	one eighth18		21	one eighth18
26.5	one eighth18		18	one sixteenth116

(Type integers or fractions.)

Part 2

{A is already answer just answer b}

b. Compare the mean of the population to the mean of the sampling distribution of the sample mean.

The mean of the population,

1818,

is

greater than

equal to

less than

greater than

the mean of the sample means,

1616.

(Round to two decimal places as needed.)

Assume that females have pulse rates that are normally distributed with a mean of

=76.0

beats per minute and a standard deviation of

=12.5

beats per minute. Complete parts (a) through (c) below.

Question content area bottom

Part 1

a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than

82

beats per minute.

The probability is

A is already answered just answer b please

{0.68440.6844.}

(Round to four decimal places as needed.)

Part 2

b. If

4

adult females are randomly selected, find the probability that they have pulse rates with a mean less than

82

beats per minute.

The probability is

enter your response here.