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[DOC File]Probability & Statistics
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(b) Suppose is another set of 8 measurements with mean 2.4 and variance 7.52. Find the mean and variance of the combined set of 18 measurements. (5, 1993) Solution: Example 10 (a) A statistical assistant used a calculator to find the mean and the variance of a frequency distribution and obtained the following results : total frequency = 409
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[DOC File]Calculator Tip Sheet - kelly's math stuff
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Calculator Tip Sheet. Chapter 5. To find the probability of x being in a specified range: TI 83/older 84 Newer TI84. 2nd 2nd DISTR DISTR. normalcdf normalcdf (lower, upper, lower: lower bound of range. upper: upper bound of range: mean: standard deviation. Paste. Enter. To find the probability of being in a specified range, for a group of size n:
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[DOC File]Binomial Probability Worksheet II
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The probability the Tim will sink a foul shot is 70%. If Tim attempts 30 . foul shots, what is the probability that. he sinks exactly 21 shots. he sinks at least 21 shots. he sinks at most 21 shots. he sinks between 18 and 20 shots, inclusive. 15. A bag contains 4 red …
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[DOC File]Calculating Probability
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Mean and Variance of a discrete r.v. with probability distribution. The mean (The mean of a r.v. is also called as the . expected value.) The variances . The standard deviation = Ex. Toss a coin twice, x = # of heads. 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 ...
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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]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]Probability Distributions
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Use the binomial table and your TI-calculator to find the mean and standard deviation of this binomial probability distribution. (Enter the probability column without rounding) Mean = Standard Deviation = Now use the binomial formulas to find the mean and standard deviation when n = 5 and p = 0.10.
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[DOC File]Z-Score Practice Worksheet
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A score that is 20 points above the mean. z=2. A score that is 10 points below the mean. z=-1. A score that is 15 points above the mean z=1.5. A score that is 30 points below the mean. z=-3. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the raw scores have a mean of 35 and a standard deviation of 6.
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Probability mean calculator