In: Statistics and Probability
Read each problem carefully and
clearly show all work.
Indicate calculator functions used (ie T-Test,
2-SampTTest,...
Read each problem carefully and
clearly show all work.
Indicate calculator functions used (ie T-Test,
2-SampTTest, etc) as well as calculator entries
State your
conclusions in terms of the context of the
problem.
- Does the time of day that a class meets affect exam grades?
Exam grades for an 8am statistics class and a 3pm statistics class
taught by the same professor were compared. The summary data are
given in the table below. Assuming both populations are
approximately normally distributed, is there a difference between
the two classes? Use a significance level of 5%.
8am Class
|
3pm Class
|
= 23
|
= 27
|
=
81
|
= 85
|
= 8.6
|
= 11.2
|
Clearly label the 6
step approach