I $5365 I 6.2.1: Hypothesis test for a population mean. U am 325 2294546 qxszqw Jump to level 1 A factorythat manufactures bolts is performing a quality control experiment. Each object should have a length of no more than 20 centimeters. The factory believes that the length of the bolts exceeds this value and measures the length 2' of 61 bolts. The sample mean bolt length was 20.06 centimeters. The population standard deviation is known to be a = 0.16 centimeters. v What is thetest statistic 2:? Ex: 1.23 : What is the p-value? EX- 0-123 Does sufcient evidence exist that the length of bolts is actuallv greaterthan the mean value at a signicance level of a = 0.1? SElECt V Feedback