Chapter 5: Q. 92. (page 346)
On a roll Suppose that you roll a fair, six-sided die 10 times. What鈥檚 the probability that you get at least one 6?
Short Answer
The probability of getting at least one is
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Chapter 5: Q. 92. (page 346)
On a roll Suppose that you roll a fair, six-sided die 10 times. What鈥檚 the probability that you get at least one 6?
The probability of getting at least one is
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Is this your card? A standard deck of playing cards (with jokers removed) consists of cards in four suits鈥攃lubs, diamonds, hearts, and spades. Each suit has cards, with denominations ace, jack, queen, and king. The jacks, queens, and kings are referred to as 鈥渇ace cards.鈥 Imagine that we shuffle the deck thoroughly and deal one card. Define events : getting a face card and : getting a heart. The two-way table summarizes the sample space for this chance process
a. Find .
b. Find . Interpret this value in context.
c. Find
Free-throw practice At the end of basketball practice, each player on the team must shoot free throws until he makes of them. Dwayne is a free-throw shooter. That is, his probability of making any free throw is . We want to design a simulation to estimate the probability that Dwayne make free throws in at most shots. Describe how you would use each of the following chance devices to perform one trial of the simulation.
a. Slips of paper
b. Random digits table
c. Random number generator
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.

Tossing coins Imagine tossing a fair coin times.
a. Give a probability model for this chance process.
b. Define event B as getting more heads than tails. Find P(B).
Random assignment Researchers recruited volunteers-men and women-to take part in an experiment. They randomly assigned the subjects into two groups of people each. To their surprise, of the men were randomly assigned to the same treatment. Should they be surprised? We want to design a simulation to estimate the probability that a proper random assignment would result in or more of the men ending up in the same group.
Get identical slips of paper. Write "" on of the slips and "" on the remaining slips. Put the slips into a hat and mix well. Draw of the slips without looking and place into one pile representing Group . Place the other slips in a pile representing Group . Record the largest number of men in either of the two groups from this simulated random assignment. Repeat this process many, many times. Find the percent of trials in which or more men ended up in the same group.
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