Question

11. Noelle has a large bag of coins. After counting the coins, she recorded the counts in the table below. She then decided to draw some coins at random, replacing each coin before the next draw.QuartersNickelsDimesPennies30101235(a) What is the probability that Noelle obtains a quarter on the first draw? (b) What is the probability that Noelle obtains a penny or a dime on the second draw? (c) What is the probability that Noelle obtains at most 10 cents worth of money on the third draw? (d) What is the probability that Noelle does not get a nickel on the fourth draw? (e) What is the probability that Noelle obtains at least 10 cents worth of money on the fifth draw?

Answer 1

Total of coins: 87

a) 30/87 = 10/29

b) 35/87 + 12/87 = 47/87

c) 35/87 + 10/87 + 12/87 = 19/29

d) 30/87 + 12/87 + 35/87 = 77/87

e) 12/87 + 30/87 = 14/29