
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Do political science classes require the same amount of writing as history classes? The 46 randomly selected political
science classes assigned an average of 13.5 pages of essay writing for the course. The standard deviation for these 46
classes was 5.7 pages. The 55 randomly selected history classes assigned an average of 16.6 pages of essay writing for
the course. The standard deviation for these 55 classes was 3.6 pages. What can be concluded at the a = 0.05 level of
significance?
For this study, we should use t-test for the difference between two independent population means ✓ ✓
a. The null and alternative hypotheses would be:
Ho: p1
H₁: 1
8
b. The test statistic tv =
c. The p-value =
d. The p-value is sa
e. Based on this, we should reject
f. Thus, the final conclusion is that...
✓✓ ✔✔ μ2
acer
(
A
9
42
O
O The results are statistically insignificant at a = 0.05, so there is insufficient evidence to conclude that the
population mean number of pages of writing that political science classes require is not the same as the
population mean number of pages of writing that history classes require.
)
0
OThe results are statistically insignificant at a = 0.05, so there is statistically significant evidence to
conclude that the population mean number of pages of writing that political science classes require is
equal to the population mean number of nages of writing that history classes require.
ES Nov 16 4:25 A
(please show your answer to 3 decimal places.)
(Please show your answer to 4 decimal places.)
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vo
:
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✓the null hypothesis.
11
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