Chapter 5: Q 1.1. The Distance and Midpoint Formulas; Graphing Utilities; Introduction to Graphing Equations (page 303)
Explain why events A and B are mutually exclusive
Because , A and B are mutually exclusive.
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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? Design and carry out a simulation to estimate the probability that the random assignment puts or more men in the same group. Follow the four-step
process.
Fill ’err up! In a recent month, of automobile drivers filled their vehicles with regular gasoline, purchased midgrade gas, and bought premium gas. Of those who bought regular gas, paid with a credit card; of customers who bought midgrade and premium gas, and , respectively, paid with a credit card. Suppose we select a customer at random.
Draw a tree diagram to represent this situation. What’s the probability that the customer paid with a credit card? Use the four-step process to guide your work.
Color-blind men Refer to Exercise . Suppose we randomly select U.S. adult males. What’s the probability that at least one of them is red-green
color-blind? Design and carry out a simulation to answer this question. Follow the four-step process.
Who eats breakfast? Refer to Exercise 68. Are events B and M independent? Justify your answer.
Keep on tossing The figure below shows the results of two different sets of coin tosses. Explain what this graph says about chance behavior in the short run and the long run.
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