About 67% of married adults say they consult with their spouse before spending $352, the average of the amount that married adults say they consult with each other before spending.

Source: Yankelovich Partner for Lutheran Brotherhood

a. Based on the preceding information, what can you conclude about the variable, dollar amount, that requires consultation with a spouse before spending? What is the $352?

A survey of 500 married adults was taken from a nearby neighborhood and gave a sample mean of

$289.75.

b. Construct a 0.98 confidence interval for the mean amount for all married adults. Use   $600.

c. Based on the answers to parts a and

b, what can you conclude about the mean dollar amount married adults discuss with their spouses before spending in the sampled neighborhood compared with the general population?