What is the probability of an individual scoring above 500 on the GMAT? Normal Distribution 24107 0 112 527 500 Z
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Statistical tables are available in many books and can also be found online You should note that the accuracy of your solutions will depend on the tables (or
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A random variable with a general normal distribution N(µ, Solution: By symmetry we want to find c such that P(Z ? c)=0 025 or ?(c) = P(Z ? c) =
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That is, rather than directly solve a problem involving a normally distributed variable X with mean µ and standard deviation ?, an indirect approach is used 1
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Use only SOCR to find the answers and print the appropriate snapshots 16 Page 17 Normal distribution - Practice problems Solutions Problem 1
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orems in statistics and with some of the consequences of it It is called the In each of the following examples, a normal distribution has been proposed
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combinations of random variables which is an important statistical tool and convert all problems involving the normal distribution into problems
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variance The answers are constants, that is, numbers which do not fluctuate A sample is a selection from the parent population Many statistical procedures
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Interpret graphs of normal probability distributions distribution in statistics • The graph of a normal Solution: Finding Probabilities for Normal
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STATS 113 Problem Sessions Normal Distribution/Empirical Rule/Z-Scores Word Problems 1 The average playing time of CDs in a large collection is 35
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