Discussion:
Compare the mean of the "Sleep" data to the national average of 6.9, with a standard deviation of 1.38.
Perform the following statistical operations using a Microsoft Word document:
State a research (directional) hypothesis and the null hypothesis about the populations
Determine the cutoff sample score at a significance level of 5%
Calculate the standard error of the mean
Calculate a zobt score
Compare the zobt to the zcrit
Calculate a confidence interval or explain why a confidence interval adds no information to the results
Interpret and report on your findings (in English and statistical notation)
1. Hours per night
2. Hours per week
3. In centimeters
4. Anxiety about statistics, at start of course
5. Anxiety about statistics, mid-way through course
| Subject |
Sleep1 |
Television2 |
Height3 |
Anxiety 14 |
Anxiety 25 |
| 1 |
8 |
5 |
162 |
7 |
|
| 2 |
6 |
4 |
164 |
3 |
|
| 3 |
7 |
7 |
167 |
10 |
|
| 4 |
6 |
10 |
170 |
6 |
|
| 5 |
6 |
10 |
168 |
5 |
|
| 6 |
7 |
20 |
152 |
8 |
|
| 7 |
8 |
20 |
168 |
4 |
|
| 8 |
4 |
3 |
157 |
9 |
|
| 9 |
7 |
5 |
173 |
7 |
|
| 10 |
6 |
10 |
188 |
8 |
|
| 11 |
5 |
40 |
150 |
6 |
|
| 12 |
5 |
35 |
183 |
7 |
|
| 13 |
7 |
0 |
170 |
9 |
|
| 14 |
6 |
10 |
196 |
7 |
|
| 15 |
7 |
25 |
168 |
1 |
|
| 16 |
8 |
5 |
157 |
8 |
|
| 17 |
4 |
9 |
172 |
5 |
|
| 18 |
6 |
18 |
165 |
6 |
|
| 19 |
5 |
12 |
180 |
4 |
|
| 20 |
9 |
25 |
152 |
9 |
|