To test whether whether or not the product of two vendors had a larger mean value...
To test whether whether or not the product of two vendors had a larger mean value than the other, a sample of 12 pieces was taken from each. The T test value was calculated as 1.85 ( with equal variance assumed). Using a level of significance of 0.01, one tail test, we can conclude that
a. There was no significant difference in the variation of the vendors
b. The T test value is less than the t critical
c. The null hypothesis is that the means are the same was rejected.
Homework Answers
Degrees of freedom = 12 + 12 - 2 = 22
For 22 degrees of freedom and 1.85 test statistic with one tailed test:
p - Value = P(t(22) > 1.85) = 0.0389
This is greater than 0.01 significance level. So,
The T test value is less than the t critical
Option B is correct.
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