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An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The volt
Posted: Sun Sep 05, 2021 5:11 pm
by answerhappygod
- An Electrician Wants To Know Whether Batteries Made By Two Manufacturers Have Significantly Different Voltages The Volt 1 (201.99 KiB) Viewed 92 times
An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 66 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. Manufacturer Sample mean voltage (millivolts) Population standard deviation(millivolts) A 157 5 B 156 2 What type of hypothesis test should be performed Select Left-tailed t-test Left-tailed z-test What is the test statistic? Ex: 0.12 0 Two-tailed t-test Two-tailed z-test Does sufficient evidence exist to support the claim wat tuit vuntayt on me batteries made by the two manufacturers is different at the a = 0.05 significance level? ( Select -