Suppose the probability of selecting a supermarket shopper who prefers plastic bags instead of paper bags is 50%. Out of 150 shoppers, how many can you expect will prefer plastic bags?

Answer 1

You can expect 75 shoppers to prefer plastic bags.

To calculate this, you simply multiply the probability of selecting a shopper who prefers plastic bags (50% or 0.5) by the total number of shoppers (150):

0.5 x 150 = 75

Answer 2

A single coin is tossed 300 times. Heads were observed 180 times. What is the long-run relative frequency of tails? Express the answer in decimal form.(1 point)