A   coin-operated drink machine was designed to discharge a mean of 6 ounces of   coffee per cup. In a test of the machine, the discharge amounts in 18   randomly chosen cups of coffee from the machine were recorded. The sample   mean and sample standard deviation were 5.94 ounces and 0.17 ounces,   respectively. If we assume that the discharge amounts are normally   distributed, is there enough evidence, at the 0.05 level of significance, to   conclude that the true mean discharge,u , differs from 6 ounces? Perform a   two-tailed test. Then fill in the table below. Carry your intermediate   computations to at least three decimal places and round your answers as   specified in the table. (If necessary, consult a list of formulas.) a. null   hypothesis? b. alternative hypothesis? c. type of test statistic? d. value of   test statistic? e. p-value?