Feedback? CHALLENGE ACTIVITY 5.2.1: Hypothesis test for a population mean. 402216.1927122.qx3zqy7 V Jump to level 1 1 V A pipes manufacturer makes pipes with a length that is supposed to be 15 2 inches. A quality control technician sampled 35 pipes and found that the sample mean length was 15.08 inches and the sample standard deviation was 3 0.29 inches. The technician claims that the mean pipe length is not 15 inches. 4 What type of hypothesis test should be performed Select Select What is the test statistic? Ex: 0.123 Two-tailed z-test Two-tailed t-test What is the number of degrees of freedom Ex: 20 Right-tailed t-test Left-tailed z-test Does sufficient evidence exist at the a = 0.05 significance level to support the technician's claim Select v 3 Check Next Feedback