If with a in QIII

question 46

Essay

If with A in QIII
find .
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Definitions:

Degree of Freedom

In statistics, it refers to the number of values in the final calculation of a statistic that are free to vary.

Group Means

The average values obtained from the data points of each group or category under examination in a study.

Statistical Significance

Indicating that the observed results are unlikely to occur by chance alone, according to a predetermined threshold of probability.

Null Hypothesis

The hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.