Nondirectional test, Over a 20 year period, the average

Nondirectional test

Assignment Help Basic Statistics

Reference no: EM13111344

Over a 20 year period, the average grade point average of applicants to our graduate program has been found to be 3.27. This year the mean grade point average of the 57 students applying to our graduate program is 3.53, with a standard deviation of 0.29. Test the hypothesis that the current sample came from a population in which mu=3.27. Use a level of .05 and a non-directional test.

The answer is: t(56)=6.77, p<.01 There is a significant difference between this sample and the population.

Reference no: EM13111344

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