WEEK 8 STATISTICS

Please answer all of the following problems. To obtain full credit you must show your work on how you obtained the answer. This also helps me to correct you if you obtained the wrong answer and provide you with partial credit.

One Sample t Test

You are the health information management DRG analyst and are interested in comparing the mean LOS for the Critical Care Unit at the hospital against the national mean for DRG 951 Breast Cancer, age greater than 35. The national average LOS for DRG 951 is 6.2 days.

1. Looking at the data below what is the LOS mean for your Critical Care Unit
   for DRG 951? (Worth 1 point)
2. Calculate the difference between the hospital mean and the national mean
   using the One-sample t test. (Worth 2 points)
3. What is the number of degrees of freedom? (Worth 1 point)
4. What is the resultant t statistic? (Worth 1 point)
5. Is it statistically significant? (Worth 1 point)
6. State the null and alternative hypotheses (Worth 1 point)
7. What is the alpha level? (Worth 1 Point)

Frequency Distribution for Length of Stay for DRG 951 in 2008 at Critical Care Hospital

Frequency Percent Valid Percent Cum Percent

Valid 1 4 12.9 12.9 12.9

2 2 6.5 6.5 19.4

3 5 16.2 16.2 35.6

4 6 19.3 19.3 54.9

5 4 12.9 12.9 67.8

6 2 6.5 6.5 74.3

7 3 9.7 9.7 84.0

8 1 3.2 3.2 87.2

9 1 3.2 3.2 90.4

10 1 3.2 3.2 93.6

11 1 3.2 3.2 96.8

12 1 3.2 3.2 100.0

Total 31 00.0 100. 0

Price: $7.35

Solution: The downloadable solution consists of 3 pages, 435 words.
Deliverable: Word Document