In Grand Central Station, there is a coffee machine which is regulated so that the amount of coffee dispensed is normally distributed with a standard deviation of .5 ounces per cup. A random sample of 50 cups had an average of 5 ounces per cup. (a) Find the maximum likelihood estimate for the average amount of coffee in each cup dispensed by the machine. (b) Find a dispensed. 95 confidence interval for the mean of all cups

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