A manufacturer of coffee vending machines has designed a new, less expensive machine. The current machine is known to dispense (into cups) an average of 6 fl. oz., with a standard deviation of .2 fl. oz. When the new machine is tested using 15 cups, the mean and the standard deviation of the fills are found to be 6 fl. oz. and .214 fl. oz. Test H0: σ = .2 versus Ha: σ ≠ .2 at levels of significance .05 and .01. Assume normality.
Answer to relevant QuestionsIn Exercise 9.54, test H0: σ = .2 versus Ha: σ > .2 at levels of significance .05 and .01. In exercise A manufacturer of coffee vending machines has designed a new, less expensive machine. The current machine is known to ...The Crown Bottling Company has just installed a new bottling process that will fill 16- ounce bottles of the popular Crown Classic Cola soft drink. Both overfilling and under filling bottles are undesirable: Under filling ...Explain what a p-value is, and explain how it is used to test a hypothesis. During 2013 a company implemented a number of policies aimed at reducing the ages of its customers’ accounts. In order to assess the effectiveness of these measures, the company randomly selects 10 customer accounts. The ...In the book Cases in Finance, Nunnally and Plath present a case in which the estimated percent-age of uncollectible accounts varies with the age of the account. Here the age of an unpaid account is the number of days elapsed ...
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