Question

There are four colors in a bag containing 500 plastic chips. It is known that 28% of the chips are green. On average, how many chips from a random sample of 50 (with replacement) would be expected to be green

Answer 1

14

Explanation:

Total number of chips = 500

Percentage of green chips = 28%

P(green chips) = 0.28

Expected number of green chips from a simple of 50

Sample size, n = 50

p of green chips = 0.28

Recall:

Mean, m = n*p

Expected number of green chips = 50 * 0.28 = 14

14 green chips