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Chapter 4: Q4 (page 143)
Subjective Probability Estimate the probability that the next time you turn on a light switch, you discover that a bulb does work.
An estimate of the probability that the next time the bulb will glow when the light switch is turned on is equal to 0.998.
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Identifying Probability Values Which of the following are probabilities?
0 3/5 5/3 -0.25 250% 7:3 1 50-50 5:1 0.135 2.017
Oregon Pick 4 In the Oregon Pick 4 lottery game, a bettor selects four numbers between 0 and 9 and any selected number can be used more than once. Winning the top prize requires that the selected numbers match those and are drawn in the same order. Do calculations for this lottery involve the combinations rule or either of the two permutation rules presented in this section? Why or why not? If not, what rule does apply?
Probability from a Sample Space. In Exercises 33鈥�36, use the given sample space or construct the required sample space to find the indicated probability.
Four Children Using the same sample space and assumption from Exercise 35, find the probability that when a couple has four children, all four are of the same gender.
Probability Rewrite the following statement so that the likelihood of rain is expressed as a value between 0 and 1: 鈥淭he probability of rain today is 25%.鈥�
In Exercises 25鈥�32, find the probability and answer the questions.. Guessing Birthdays On their first date, Kelly asks Mike to guess the date of her birth, not including the year.
a. What is the probability that Mike will guess correctly? (Ignore leap years.)
b. Would it be unlikely for him to guess correctly on his first try?
c. If you were Kelly, and Mike did guess correctly on his first try, would you believe his claim that he made a lucky guess, or would you be convinced that he already knew when you were born?
d. If Kelly asks Mike to guess her age, and Mike鈥檚 guess is too high by 15 years, what is the probability that Mike and Kelly will have a second date?
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