Some states now allow online gambling. As a marketing manager for a casino, you need to determine the percentage of adults in
those states who gamble online. How many adults must you survey in order to be 90% confident that your estimate is in error by no
more than three percentage points? Complete parts (a) and (b) below.
a. Assume that nothing is known about the percentage of adults who gamble online.
n=
(Round up to the nearest integer.)