A local bottler in Hawaii wishes to ensure that an average of 20 ounces of passion fruit juice is used to fill each bottle. In order to analyze the accuracy of the bottling process, he takes a random sample of 37 bottles. The mean weight of the passion fruit juice in the sample is 19.40 ounces. Assume that the population standard deviation is 1.34 ounce. Use Table 1.
Use the critical value approach to test the bottler’s concern at ? = 0.10.
Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)
Find the critical value(s). (Round your answer to 2 decimal places.)