Suppose the probability of selecting a supermarket shopper who prefers plastic bags instead of paper bags is 50%. Out of 150 shopper, how many can you expect will prefer plastic bags?
A. 75
B. 70
C. 100
D. 50
A. 75
Expected value = Total number of shoppers * Probability of selecting a shopper who prefers plastic bags
Expected value = 150 * 0.50
Expected value = 75
Therefore, you can expect 75 shoppers out of 150 to prefer plastic bags.