The accompanying data represent the ideal number of children for

a random sample of 900 adults. Complete parts (a) through (d)

Data:

X(# of children) Frequency

0 9

1 31

2 532

3 242

4 67

5 17

6 2

A.) Construct a discrete probability distribution for the random

variable x.

(Round to three decimal places as needed).

B.) Draw a graph of the probability distribution.

C.) Compute and interpret the mean of the random variable X.

The mean is ____ children. (Round to one decimal place as

needed).

Which of the following interpretations of the mean is

correct?

1.) The observed ideal number of children will be equal to the

mean ideal number of children for most adults.

2.) The observed ideal number of children will be less than the

mean ideal number of children for most adults.

3.) If many adults were surveyed, one would expect the mean

ideal number of children to be the mean of the random variable.

4.) If any number of adults were surveyed, one would expect the

mean ideal number of children to be the mean of the random

variable.

D.) Compute the standard deviation of the random variable X.

The standard deviation is ___ children

(Round to one decimal palce as needed.)

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