You wish to test the following claim at a significance level of a = 0.01. Ho:µ = 67.5 H1: µ < 67.5 %3D You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size 107 with mean 63.3 and a standard deviation of 20.8.
You wish to test the following claim at a significance level of a = 0.01. Ho:µ = 67.5 H1: µ < 67.5 %3D You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size 107 with mean 63.3 and a standard deviation of 20.8.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:You wish to test the following claim at a significance level of a = 0.01.
Ho:µ = 67.5
H1:µ < 67.5
You believe the population is normally distributed, but you do not know the standard deviation. You obtain
a sample of size 107 with mean 63.3 and a standard deviation of 20.8.
What is the test statistic for this sample? (Report answer accurate to 3 decimal places.)
What is the p-value for this sample? (Report answer accurate to 4.decimal places.)
This test statistic leads to a decision to
O reject the null
O accept the null
O fail to reject the null
As such, the final conclusion is that
O there is sufficient evidence to conclude that the population mean is equal to 67.5.
O there is not sufficient evidence to conclude that the population mean is equal to 67.5.
O there is sufficient evidence to conclude that the population mean is less than 67.5.
O there is not sufficient evidence to conclude that the population mean is less than 67,5.
Submit Question
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Transcribed Image Text:You are conducting a study to see if the probability of a true negative on a test for a certain cancer is
significantly different from 0.12. You use a significance level of a = 0.10.
Ho:p = 0.12
H1:p # 0.12
You obtain a sample of size 295 in which there are 20 successes.
What is the test statistic for this sample? (Report answer accurate to 3 decimal places.)
What is the p-value for this sample? (Report answer accurate to 4 decimal places.)
This test statistic leads to a decision to
O reject the null
O accept the null
O fail to reject the null
As such, the final conclusion is that
O there is sufficient evidence to conclude that the probability of a true negative on a test for a certain
cancer is different from 0.12.
O there is not sufficient evidence to conclude that the probability of a true negative on a test for a
certain cancer is different from 0.12.
O there is sufficient evidence to conclude that the probability of a true negative on a test for a certain
cancer is equal to 0.12.
O there is not sufficient evidence to conclude that the probability of a true negative on a test for a
certain cancer is equal to 0.12.
Submit Question
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