21.07.2022 - 11:48

The game called lotto sponsored by the Louisiana Lottery Commission pays its largest prize when a contestant matches all 5 of the 32 possible numbers. Assume there are 32 ping-pong balls each with a s

Question:

The game called lotto sponsored by the Louisiana Lottery Commission pays its largest prize when a contestant matches all 5 of the 32 possible numbers. Assume there are 32 ping-pong balls each with a single number between 1 and 32. Any number appears only once, and the winning balls are selected without replacement. Round all answers to 8 decimal places.

a. The commission reports that the probability of matching all the numbers are 1 in 201,376. What is this in terms of probability?

b. Use the hypergeometric formula to find the probability of matching all 5 winning numbers. The lottery commission also pays if a contestant matches 3 or 4 of the 5 winning numbers. Hint: Divide the 32 numbers into two groups, winning numbers, and nonwinning numbers.

c. Find the probability, again using the hypergeometric formula, for matching 3 of the 5 winning numbers.

d. Find the probability of matching 4 of the 5 winning numbers.

Answers (1)
  • Erma
    April 3, 2023 в 08:27
    a. The probability of matching all 5 numbers is 1 in 201,376. This means that out of 201,376 possible outcomes, only one is a winning combination. b. Using the hypergeometric formula, with 5 winning numbers and 27 nonwinning numbers, the probability of matching all 5 winning numbers is: P(X=5) = (5 choose 5) * (27 choose 0) / (32 choose 5) = 1/201,376 = 0.0000049588 To find the probability of matching either 3 or 4 of the 5 winning numbers, we can use the same formula with different values of X: P(X=3) = (5 choose 3) * (27 choose 2) / (32 choose 5) = 0.0067658995 P(X=4) = (5 choose 4) * (27 choose 1) / (32 choose 5) = 0.000261745 c. The probability of matching 3 of the 5 winning numbers is: P(X=3) = (5 choose 3) * (27 choose 2) / (32 choose 5) = 0.0067658995 d. The probability of matching 4 of the 5 winning numbers is: P(X=4) = (5 choose 4) * (27 choose 1) / (32 choose 5) = 0.000261745
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