CHALLENGE ACTIVITY 5.4.1: Hypothesis test for the difference between two population means. 402216.1927122.qx3zqy7 Jump to level 1 1 An electrician wants to know whether batteries made by two manufacturers have 2 significantly different voltages. The voltage of 58 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are 3 known. The results are summarized in the following table. Manufacturer Sample mean Population standard voltage (millivolts) deviation(millivolts) A 110 2 B 109 4 What type of hypothesis test should be performed? |Select What is the test statistic? Ex: 0.12 Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.05 significance level? |Select v 1 2 3 Check NextCHALLENGE t i t ACTIVITY I 5.4.1: HypotheSIs test for the difference between two population means. 4022i ai 927i 22 qx32qy7 Jump to level 1 An electrician wants to know whether batteries made by two manufacturers have signicantly different voltages The voltage of 58 batteries from each manufacturer were measured, The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Sample mean Population standard voltage (millivolts) deviation(millivolts) Manufacturer 110 2 109 4 What type of hypothesis test should be performed? What is the test statistic? EX: 0'1 2 Left-tailed ztest Right-tailed ttest Two-tailed ttest Does sufficient evidence exist to support the claim t . batteries made , , Two-tailed z-test by the two manufacturers is different at the oz = 0.! a a V , i . Select V III 2 m