An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 112 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 voltage (millivolts) Population standard deviation(millivolts) Manufacturer A 186 4 185 2 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 Select v by the two manufacturers is different at the a = 0.1 significance level?
An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 112 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 voltage (millivolts) Population standard deviation(millivolts) Manufacturer A 186 4 185 2 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 Select v by the two manufacturers is different at the a = 0.1 significance level?
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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Problem 1P
Related questions
Question
![Jump to level1
An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 112 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.
2.
Sample mean
voltage (millivolts)
Population standard
deviation(millivolts)
Manufacturer
A
186
4
185
What type of hypothesis test should be performed? Select
Select
What is the test statistic? Ex: 0.12
Left-tailed t-test
batteries made
Does sufficient evidence exist to support the claim t Left-tailed z-test
by the two manufacturers is different at the a
0.1
Right-tailed t-test
Select v
Two-tailed z-test
Check
Nov
2)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6312dff6-de80-43a2-ab04-d135fcc4cc9a%2F1cded83e-c793-4777-94ae-45af66fc262b%2Fz393ar_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Jump to level1
An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 112 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.
2.
Sample mean
voltage (millivolts)
Population standard
deviation(millivolts)
Manufacturer
A
186
4
185
What type of hypothesis test should be performed? Select
Select
What is the test statistic? Ex: 0.12
Left-tailed t-test
batteries made
Does sufficient evidence exist to support the claim t Left-tailed z-test
by the two manufacturers is different at the a
0.1
Right-tailed t-test
Select v
Two-tailed z-test
Check
Nov
2)
![Jump to level 1
An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 112 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
voltage (millivolts)
Population standard
deviation(millivolts)
Manufacturer
A
186
4
185
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 = 0.1 significance level?
Select v
2)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6312dff6-de80-43a2-ab04-d135fcc4cc9a%2F1cded83e-c793-4777-94ae-45af66fc262b%2Fzpiquj8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Jump to level 1
An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 112 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
voltage (millivolts)
Population standard
deviation(millivolts)
Manufacturer
A
186
4
185
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 = 0.1 significance level?
Select v
2)
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