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A random variable has a mean of 73 and a standard deviation of 15. a) What additional information do you need about this variable, before

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A random variable has a mean of 73 and a standard deviation of 15. a) What additional information do you need about this variable, before using Z tables to determine probabilities associated with it? b) Assuming the information referred to in a) is now provided, use Z tables to determine the probability that a randomly selected value is greater than 72. SHOW WORKINGS TO SUPPORT YOUR

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