homework for stats

Question

In a box, there are 5 dimes, 2 quarters, and 3 pennies, so a total of 10 coins. 

If your friend Nick picks a coin at random, what’s the probability that it is a quarter?

Answer 1

divide the number of quarters by the total number of coins = 2/10 + 0.2 = 20%

That's if the selection is totally random.

Quarters are the largest coin compared to dimes or pennies. If

you reach in odds seem more likely you might get the largest coin. it takes

up more space, making it a more likely target

probability of a quarter chosen may be more than 20%

In the limit, as a coin gets smaller, close to zero in size, it may be far more

difficult for a random selection to get that small coin, compared to much larger coins

Answer 2

2/10 = 1/5 = 0.2 = 20%