Exam 5: Discrete Probability Distributions
Exam 1: Introduction to Statistics155 Questions
Exam 2: Exploring Data With Tables and Graphs132 Questions
Exam 3: Describing, Exploring, and Comparing Data225 Questions
Exam 4: Probability219 Questions
Exam 5: Discrete Probability Distributions205 Questions
Exam 6: Normal Probability Distributions254 Questions
Exam 7: Estimating Parameters and Determining Sample Sizes170 Questions
Exam 8: Hypothesis Testing187 Questions
Exam 9: Inferences From Two Samples192 Questions
Exam 10: Correlation and Regression174 Questions
Exam 11: Goodness-Of-Fit and Contingency Tables100 Questions
Exam 12: Analysis of Variance113 Questions
Exam 13: Nonparametric Tests121 Questions
Exam 14: Statistical Process Control90 Questions
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The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate office. Its probability distribution is as follows. Houses Sold (x) Probability P(x) 0 0.24 1 0.01 2 0.12 3 0.16 4 0.01 5 0.14 6 0.11 7 0.21
(Multiple Choice)
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Find the indicated probability. Round to three decimal places.
-In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, that is the probability that no more than 6 belong to an ethnic minority?
(Multiple Choice)
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Find the indicated mean.
-The mean number of homicides per year in one city is 21.4. Suppose a Poisson distribution will be used to find the probability that on a given day there will be fewer than 4 homicides. Find the mean of the appropriate
Poisson distribution (the mean number of homicides per day). Round your answer to four decimal places.
(Multiple Choice)
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Find the standard deviation, , for the binomial distribution which has the stated values of and . Round your answer to the nearest hundredth.
(Multiple Choice)
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Find the indicated probability.
-A slot machine at a hotel is configured so that there is a 1/1200 probability of winning the jackpot on any individual trial. If a guest plays the slot machine 6 times, find the probability of exactly 2 jackpots. If a guest
Told the hotel manager that she had hit two jackpots in 6 plays of the slot machine, would the manager be
Surprised?
(Multiple Choice)
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