Determine if the 5 guide for cumbersome calculations can be

Determine if the 5% guide for cumbersome calculations can be applied? why?

Three cards are selected from a standard 52-card deck without replacement. the numberof nines selected is recorded.

Solution

Determine if the 5% guide for cumbersome calculations can be applied? why?

Three cards are selected from a standard 52-card deck without replacement. the numberof nines selected is recorded.

Note that 5% of 52 = 0.05*52 = 2.6.

As we choose 3 cards here, it is greater than 2.6 already. This, we cannot use the 5% guide for cumbersome calculations.