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 two percentage points?

1) Assume taht noting is known about the percentage of adults who gamble online. n= (Round up to nearest integer)

2) Assume that 17% of all adults gamble online (Round up to the nearest integer)

3) Assume that 18% of all adults gamble online (Round up to the nearest integer)

4) Assume that 19% of all adults gamble online (Round up to the nearest integer)