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# The output voltage of a power supply is assumed to be normallydistributed. Sixteen observations taken at random on voltage are asfollows: 10.35, 9.30, 10.00, 9.96, ...

## Question

###### The output voltage of a power supply is assumed to be normallydistributed. Sixteen observations taken at random on voltage are asfollows: 10.35, 9.30, 10.00, 9.96, 11.65, 12.00, 11.25, 9.58,11.54, 9.95, 10.28, 8.37, 10.44, 9.25, 9.38, and 10.85. Test the hypothesis that the mean voltage equals 12v usinga 95% two-sided confidence interval.Test the hypothesis that the variance equals 11v using a 95%two-sided confidence interval

The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at random on voltage are as follows: 10.35, 9.30, 10.00, 9.96, 11.65, 12.00, 11.25, 9.58, 11.54, 9.95, 10.28, 8.37, 10.44, 9.25, 9.38, and 10.85. Test the hypothesis that the mean voltage equals 12v using a 95% two-sided confidence interval. Test the hypothesis that the variance equals 11v using a 95% two-sided confidence interval

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