samples from two populations, the first of size 31 and the second of size 8.  You calculate that the first sample has an average of -31 with standard deviation 2, while the second sample has an average of -35 with a standard deviation of 4.  t-statistic for this experiment is 2.74.  assume you are looking for any difference between the means of the two populations.  You should reject or fail to reject the null hypothesis at signficance level .05? a.Impossible to determine because the p-value is equal to the significance level b. Reject c. Fail to Reject

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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Suppose you measure a variable on two samples from two populations, the first of size 31 and the second of size 8.  You calculate that the first sample has an average of -31 with standard deviation 2, while the second sample has an average of -35 with a standard deviation of 4.  t-statistic for this experiment is 2.74.  assume you are looking for any difference between the means of the two populations.  You should reject or fail to reject the null hypothesis at signficance level .05?

a.Impossible to determine because the p-value is equal to the significance level

b. Reject

c. Fail to Reject

 

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