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[DOC File]Math 227 Statistics
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Find the probability that the sum is 8 or 11. Find the probability that the sum is 6, given that one of the dice shows an odd number. (12 pts: 4 ea.) Let x be the number of errors that appear on a randomly selected page of a book. The following table lists the probability distribution of x. X P(x) 0 0.73 1 0.16 2 0.06 3 0.04 4 0.01 Find the mean.
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[DOC File]Z-Score Practice Worksheet
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What is the probability of getting a raw score between 41 and 44? 9%. Scores on the SAT form a normal distribution with and . What is the minimum score necessary to be in the top 15% of the SAT distribution? 604. Find the range of values that defines the middle 80% of the distribution of SAT scores (372 and 628). Find the z-scores - -1.28, 1.28
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[DOC File]Exam 3 Practice Questions
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48. B First, we use a calculator to find that the sample standard deviation s = 83.55. Then. 49. A The 95% confidence interval for the population mean is. In this particular problem, we have. Using df = n – 1 = 4, we look up (in a table) that t.025 = 2.776. Then our confidence interval is. 50.
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[DOC File]Worksheet C: Pascal’s Triangle
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Find the probability of selecting one green marble from bag A and one black marble from bag B. 2. Two seniors, one from each government class are randomly selected to travel to Washington, D.C. Wes is in a class of 18 students and Maureen is in a class of 20 students. Find the probability that both Wes and Maureen will be selected. 3.
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[DOC File]Binomial Probability Worksheet II
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Find the probability of the Binomials given. 9. In a history class, Colin and Diana both write a multiple choice quiz. There are 10 questions. Each question has five possible answers. What is . the probability that. Colin will pass the test if he guesses an answer to each question.
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[DOC File]Using The TI-83 to Construct a Discrete Probability ...
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TI-83/84 Discrete Probability Distributions. You can use the TI-83/84 calculator to graph a discrete probability distribution as well as find the mean (expected value) and standard deviation of a discrete random variable. Example: The manager of the Elmwood …
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[DOC File]Calculating Probability
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Find and . The probability distribution is . x 0 1 2 P(x) 0.25 0.5 0.25 (the number of heads we can expect to get if we toss a coin twice).. Ex. A contractor is required by a county planning department to submit from 1 to 5 different forms, depending on the nature of the project. Let x = # of forms required of the next contractor, and for x=1,2 ...
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[DOC File]Section 1
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Evaluate a binomial probability by using the mathematical formula for P(X = k). Explain the difference between binompdf(n, p, X) and binomcdf(n, p, X). Use your calculator to help evaluate a binomial probability. If X is B(n, p), find µx and (x (that is, calculate the …
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