# Statistics Testing - Difference between the mean healing times

Document Sample

```					              Sub: Statistics                                                                                 Topic: Testing

Question:
Test the significant difference between the mean healing times of the two
diaper medications
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Six infants were involved in a study to compare the effectiveness of two medications for the
treatment of diaper rash. For each baby two areas of approximately the same size and rash
severity were selected and an area was treated with medication A and the other with
medication B. The number of hours for the rash to disappear was recorded for each medication
and each infant and the values obtained are given below:

Infant                      1     2    3    4    5    6

Medication A               46 50 46 51 43 45

Medication B               43 49 48 47 40 40

-At the significance level 0.01 is there sufficient evidence to conclude that a difference exists in
the mean time required for the elimination of the rash?

Solution:
We use t-test for testing the difference between the two treatments:

First set up null and alternative hypotheses:

Ho: There is no significant difference between the mean healing times of the two diaper

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 views: 21 posted: 3/30/2010 language: English pages: 4
Description: Test the significant difference between the mean healing times of the two diaper medications - Six infants were involved in a study to compare the effectiveness of two medications for the treatment of diaper rash,
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