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[DOC File]Using The TI-83 to Construct a Discrete Probability ...
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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 Café has a staff of six wait-persons on weekend evening shifts.
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[DOC File]Calculating Probability
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Probability Distribution of a discrete random variable (§5.4, §1.3) Mean and Variance of a discrete random variable (§5.4, §2.1, §2.2)-----Random Variable (r.v.) A . random variable . is a real-valued variable whose value depends on the outcome of an experiment. Ex. Toss a coin twice, S={HH, HT, TH, TT } We can define a r.v. x = # of heads.
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[DOC File]Section 1
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For a general random variable X with μ = 6 and σ = 4 calculate P(4 < X < 11) Example 4: For a general random variable X with μ = 3 and σ = 2 find the value x such that P(X < x) = 0.3. Example 5: For a general random variable X with μ = –2 and σ = 4 find the value x such that P(X > x) = 0.2. Example 6: For random variable X with μ = 6 ...
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[DOC File]Chapter Five
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5.22 The mean of discrete random variable x is the value that is expected to occur per repetition, on average, if an experiment is repeated a large number of times. It is denoted by and calculated as. The standard deviation of a discrete random variable x measures the spread of its probability distribution. It is denoted by and is calculated as
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[DOC File]The Practice of Statistics - AP STATISTICS - AP Statistics
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What is the mean of a discrete random variable X? How do you calculate the mean of a discrete random variable? Define expected value. What notation is used for expected value? ... What commands on the calculator are used to calculate binomial probabilities? 8. Explain how to calculate the mean and standard deviation of a binomial random variable.
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[DOC File]AP Statistics
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Aug 27, 2013 · The mean of any discrete random variable is an average of the possible outcomes, with each outcome weighted by its probability. Definition: Suppose that X is a discrete random variable whose probability distribution is. Value: x1 x2 x3 … Probability: p1 p2 p3 … To find the mean …
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Mean of the random variable x calculator