The mean voltage and standard deviation of 5 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation(millivolts) A 107 2 B 103 5 What type of hypothesis test should be performed?________ select ( left-tailed z-test, paired t-test, two-tailed z-test, unpaired t-test) What is the test statistic? ______ (Ex: 0.123) What is the number of degrees of freedom? _____ (Ex: 25) Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.05 significance level? _______ select (no or yes)
The mean voltage and standard deviation of 5 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation(millivolts) A 107 2 B 103 5 What type of hypothesis test should be performed?________ select ( left-tailed z-test, paired t-test, two-tailed z-test, unpaired t-test) What is the test statistic? ______ (Ex: 0.123) What is the number of degrees of freedom? _____ (Ex: 25) Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.05 significance level? _______ select (no or yes)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The mean voltage and standard deviation of 5 batteries from each manufacturer were measured. The results are summarized in the following table.
| Manufacturer | Sample mean voltage (millivolts) | Population standard deviation(millivolts) |
|---|---|---|
| A | 107 | 2 |
| B | 103 | 5 |
What type of hypothesis test should be performed?________ select ( left-tailed z-test, paired t-test, two-tailed z-test, unpaired t-test)
What is the test statistic? ______ (Ex: 0.123)
What is the number of degrees of freedom? _____ (Ex: 25)
Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.05 significance level? _______ select (no or yes)
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