Question

If approximately 10% of people are left-handed, how many lefties would you expect in a high school graduating class of 424​

Answer 1

42

Explanation:

P(left) = 0.10

Expected number of lefties among high school grads of 424

= 424 * 0.10

= 42 (to the nearest person)

Answer 2

you do 20% of 424

1 0% of 424 =42.4

you could round it to 42