Recently, a local newspaper reported that part-time students are older than full-time students. In order to test the validity of its statement, two independent samples of students were selected.
Full-Time
Part-Time
(in years)26
24
s2
3
n42
31
?
a.Give the hypotheses for the above.b.Determine the degrees of freedom.c.Compute the test statistic.d.Using ? = .05, test to determine whether or not the average age of part-time students is significantly more than full-time students.
What will be an ideal response?
?
| a. | H0: ?p - ?f? 0 Ha: ?p - ?f> 0 |
| b. | 49 |
| c. | test statistic t = -3.221 |
| d. | p-value (.0011) is less than .005, reject H0; the average age of part-time students is significantly more. |
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