Description
In this discussion, you will evaluate a research question and determine how that question might best be analyzed. To do this, you will need to identify the appropriate application of course specified statistical tests, examine assumptions and limitations of course specified statistical tests, and communicate in writing critiques of statistical tests.
A researcher wishes to study the effect of a new drug on blood pressure. Consider and discuss the following questions as you respond:
- Would you recommend using a z-test, a t-test, or an ANOVA for the analysis? Explain your answer.
- What would your choice of test depend on? For the test you select, explain your design and your comparison groups.
- Would the hypothesis be directional or non-directional?
- Would the test be one-tailed or two-tailed?
- What would be the null and what would be the alternative hypothesis?
Explanation & Answer
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Running head: RESEARCH
1
Research
Name
Institution
Course
Tutor
Date
RESEARCH
2
The Effect of New Drug on Blood Pressure
T-test/T-statistic
This is a statistical research question that requires use of t-test to determine the
significance level of relationship of the variables under study. Now that there are two variables
under study (drug and blood pressure) use of t-test for the two populations is convenient
especially when use of small sample sizes is embraced. This will be the best statistical technique
of testing difference between samples provided that the variance of normal distribution of the
samples under study is unknown. Generally, a t-test has the ability to look for distribution and
degree of freedom in order to enable the researcher determine probability of any significance
difference between two populations (Richard, 2004). An...
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