1.) Earl has just finished reading in his textbook about the study of grades earned in introductory courses at UMUC.He sees that the mean grade for history is 2.71, whereas the mean grade in political science is 3.50.Based on this information he decides to switch his major to political science, where he feels it will be more likely he could receive an A in his courses.Do you think Earl's decision is appropriate based on data?

2.) The ages for a sample of 10 women who have just given birth to their first child are 12, 23, 31, 19, 20, 20, 19, 14, 15, and 26.Compute each of the following descriptive measures:

a)the range

b)the variance

c)the standard deviation

3.) Calculate the standard deviations for the following set of measurements:

a)10, 8, 6, 3, 8, 4, 2, 8, 0

b)20, 1, 2, 5, 3, 4, 0

4.) Paramount Studios has won the most Oscars than any other studio.Below is a chart indicating the movie and the box office receipts.On average, what are the box office receipts for Oscar movies under this studio name?

Titantic$650,488,188

Terms of Endearment $105,423,489

Forrest Gump$329,594,499

Ordinary People$54,356,923

Braveheart$25,605,945

5.) Calculate the standard deviation for the lowest three profit making movies.