The cost of a college education has increased at a much faster rate than costs i
ID: 3390608 • Letter: T
Question
The cost of a college education has increased at a much faster rate than costs in general over the past twenty years. In order to compensate for this, many students work part- or full-time in addition to attending classes. At one university, it is believed that the average hours students work per week exceeds 20. To test this at a significance level of 0.05, a random sample of n = 20 students was selected and the following values were observed:
26
15
10
40
10
20
30
36
40
0
5
10
20
32
16
12
40
36
10
0
Based on these sample data, which of the following statements is true?
a)
The research hypothesis that the mean hours worked exceeds 20 is not supported by these sample data.
b) The test statistic is approximately t = 0.13.
c) The standard error of the sampling distribution is approximately 3.04.
d) All of the above are true.
26
15
10
40
10
20
30
36
40
0
5
10
20
32
16
12
40
36
10
0
Explanation / Answer
a)
d) All of the above are true.
a)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.