An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 91 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 deviat A 119 2 118 4 What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12E 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

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An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 91 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 deviat
A
119
2
118
4
What type of hypothesis test should be performed? Select
What is the test statistic? Ex: 0.12E
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
Transcribed Image Text:An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 91 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 deviat A 119 2 118 4 What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12E 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
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