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Chapter 5: Q. 58 (page 329)
If a player rolls a , it is called craps. What is the probability of getting craps or an even sum on one roll of the dice?
a.
b.
c.
d.
e.
The probability of getting craps or an even sum on one roll of the dice is (d)
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Three pointers The figure shows the results of a basketball player attempting many
point shots. Explain what this graph tells you about chance behavior in the short run and
long run.
Suppose this player attempts shots in a game and makes only of them. Does this provide convincing evidence that she is less than a shooter?
a. Yes, because () is less than
b. Yes, because she never made of her shots in the simulation.
c. No, because it is plausible (believable) that she would make or fewer shots by chance alone.
d. No, because the simulation was only repeated times.
e. No, because more than half of the simulated results were less than
Mac or PC? A recent census at a major university revealed thatof its students mainly used Macs. The rest mainly used PCs. At the time of the census, of the school鈥檚 students were undergraduates. The rest were graduate students. In the census, of respondents were graduate students and used a Mac as their main computer. Suppose we select a student at random from among those who were part of the census. Define events G: is a graduate student and M: primarily uses a Mac.
a. Find P(G 鈭� M). Interpret this value in context.
b. Consider the event that the randomly selected student is an undergraduate student and
primarily uses a PC. Write this event in symbolic form and find its probability.
Another commercial If Aaron tunes into his favorite radio station at a
randomly selected time, there is a probability that a commercial will be playing.
a. Interpret this probability as a long-run relative frequency.
b. If Aaron tunes into this station at randomly selected times, will there be exactly one
time when a commercial is playing? Explain your answer.
Tall people and basketball players Select an adult at random. Define events T: person is over feet tall, and
B: person is a professional basketball player. Rank the following probabilities from smallest to largest. Justify your answer.
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