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Week 7 Discussion

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Statistics
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Chamberlain College of Nursing
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Running Head: HYPOTHESIS TESTING 1
Week 7 Discussion: Hypothesis Testing
Tanya Crawley
2/18/2020

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HYPOTHESIS TESTING 2
Hypothesis Testing
Description of a hypothesis test in nursing:
Consider 2 Treatments: Treatment A and Treatment B. Let Treatment B be a new Treatment
which claims that it will lower the systolic blood pressure of patients suffering from hypertension
as compared to existing Treatment A.
The research question is:
Does the Treatment B lower the systolic blood pressure significantly as compared to Treatment
A?
H0: Null Hypothesis:
HA: Alternative Hypothesis:
Step 1: Collect data for Treatments A and B.
Step 2: Calculate n1,
1
, s
1
, n
2
,
2
and s
2
from the data.
Step 3: Calculate Test Statistic t as follows:


where SE is the standard error calculated from the sample data.
Step 4:
Obtain the critical values of t corresponding to confidence level and degrees of freedom = n
1
+
n
2
- 2.
Step 5:

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1 Running Head: HYPOTHESIS TESTING Week 7 Discussion: Hypothesis Testing Tanya Crawley 2/18/2020 HYPOTHESIS TESTING 2 Hypothesis Testing Description of a hypothesis test in nursing: Consider 2 Treatments: Treatment A and Treatment B. Let Treatment B be a new Treatment which claims that it will lower the systolic blood pressure of patients suffering from hypertension as compared to existing Treatment A. The research question is: Does the Treatment B lower the systolic blood pressure significantly as compared to Treatment A? H0: Null Hypothesis: 𝜇𝐴 ≤ 𝜇𝐵 HA: Alternative Hypothesis: 𝜇𝐴 > 𝜇𝐵 Step 1: Collect data for Treatments A and B. Step 2: Calculate n1, 𝑥̅ 1, s1, n2, 𝑥̅ 2 and s2 from the data. Step 3: Calculate Test Statistic t as follows: 𝑡= 𝑥̅ 1 −𝑥̅ 2 𝑆𝐸 where SE is the standard error calculated from the sample data. Step 4: Obtain the critical values of t corresponding to confidence level n2 - 2. Step 5: and degrees of freedom = n1 + HYPOTHESIS TESTING If the calculated value of t > critical value of t, the difference is significant. Reject the null hypothesis. Interpretation: The data support the claim that Treatmen ...
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