Question: Scenario: A statistics professor recently changed textbooks. She had compiled data on the means and standard deviations of final grades between her current class (using the newer text) and her previous classes over the years (who had used the older book). She was interested in knowing if her newer text would produce differences in the final grades of her current students - as compared to her earlier courses. Her study produced the following result: z = 1.98, p < .05.

Questions:

1. Please state the null hypothesis using symbolic notation (you may use "M" for mean, a capital U for the population average)
2. Please state the alternate hypothesis using symbolic notation
3. Is this research statistically significant - why or why not?
4. Should the professor reject or accept the null hypothesis?
5. In one paragraph or less, please explain what the professor may conclude from her results.

Price: $2.99

Solution: The downloadable solution consists of 1 pages
Deliverable: Word Document