Math 1530 Walters State Comm College Review Exam Ch. 3
1. In rolling a die, what is the probability of obtaining either a 5 or a 6?
2. On four consecutive rolls of a die a 6 is obtained. What is the probability of obtaining a 6 on the 5
th
roll?
3. Based on meteorological records, the probability that it will snow in a certain town on Jan 17 is 0.315. Find the probability
that it will not snow in that particular town on Jan 17.
4. In tossing a coin, what is the probability of obtaining HHHTH in that order in five tosses?
5. Consider a standard deck of 52 cards. Determine the following probabilities.
A. P(9 of clubs)
B. P(ace)
C. P(ace of spades and ace of hearts) in that order with and without replacement
D. P(3 aces) with and without replacement
E. P(ace, king, queen) in that order with and without replacement
6. An urn contains 20 red balls, 20 green balls, and 20 yellow balls. Suppose three balls are randomly selected. Find the
following probabilities.
A. P(3 red) with and without replacement
B. P(3 balls of any one color) without replacement (3 reds or 3 greens or 3 yellows)
C. P(3 different colors) with replacement (a thinking challenge question)
7. A coin is tossed 500 times with the results being 240 heads and 260 tails. What is the relative frequency (empirical)
probability of getting a head from this experiment?
8. Two dice, one red and one white are tossed. Determine the probability of:
A. P(2 white dice)
B. P(7)
C. P(red = 6)
D. P(red = 6 | sum = 11)
