A backpack manufacturer wants to know if students in high school carry more books than college students do. Company researchers take a simple random sample from each group and record the number of textbooks each subject is carrying. They get the following data:
High school: (5, 3, 2, 5, 6, 4, 7, 6, 5, 4, 3, 2, 1, 4, 3, 0, 2)
College: (5, 3, 2, 4, 1, 0, 0, 3, 6, 2, 1, 3, 1, 2, 4, 4, 2)
Using high-school students as sample 1 and college students as sample 2, the researchers compute the following sample statistics and t statistic:
= 3.647, s1 = 1.9, n1 = 17
= 2.529, s2 = 1.7, n2 = 17
t = 1.808
Using 2-SampTTest in theTESTS menu of your calculator, calculate the degrees of freedom and P-value for the hypothesis test H0:=,Ha:>. Don't pool.
A. k = 31.60, p = .9598
B. k = 32, p = .0803
C. k = 32, p = .0401
D. k = 31.60, p = .0804
E. k = 31.60, p = .0402