In a random sample of

81

audited estate tax returns, it was determined that the mean amount of additional tax owed was

$3407

with a standard deviation of

$2599

.

Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns.

Part 1

lets Find and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Select the correct choice below and fill in the answer boxes to complete your choice.

(Use ascending order. Round to the nearest dollar as needed.)

A.

90% of taxes owed for estate tax returns are between

$enter your response here

and

$enter your response here

.

B.

One can be 90% confident that the mean additional tax owed is between

$enter your response here

and

$enter your response here

.

C.

There is a 90% probability that the mean additional tax owed is between

$enter your response here

and

$enter your response here

.