A Marketing Research Company Is Estimating the Average Total Compensation

Multiple Choice

A marketing research company is estimating the average total compensation of CEOs in the service industry. Data were randomly collected from 18 CEOs and the 95% confidence interval for
The mean was calculated to be ($2,181,260, $5,836,180) . What would happen to the confidence
Interval if the confidence level were changed to 90%?

A) There would be no change in the width of the interval.
B) The interval would get narrower.
C) It is impossible to tell until the 90% interval is constructed.
D) The interval would get wider.