Sign Up Now
Get instant access to over 1 million+ study documents
OR
Already registered? click here to login
By creating your account, you agree to our terms of service, privacy policy and student honor code.
In a clinical trial cluster sampling could be used to select individuals from a similar geographic area.
19-a
20-B
21-B
22-C
23-B
24-C
25-B
26-B
27-B
28-C
29-a
30-a
31-a
32-a
33-a
34-a
35-B
Quiz 2
1-True
2-False
3-True
4-False
5-False
6-True
7-True
8-False
9-True
10-False
11-True
12-True
13-False
14-False
15-False
16-B
17-D
18-C
19-a
20-D
21-C
22-B
23
H0 is the null hypothesis and it generally states that there is no difference or no change. H1 is the alternative hypothesis or the researcher hypothesis and is generally the opposite of the null hypothesis. Hypothesis testing centers on the acceptance and rejection of the null hypothesis.
24.
In most clinical research studies the researcher would use a one-tailed test. This is so for two basic reasons the first is that one tailed tests are more powerful and the second is that theoretically the researcher is usually aware of the direction in which the change is expected...
This level of significance is appropriate because you would want to ensure that the treatment is actually working. A lower level of significance would mean a higher risk of rejecting the null when it is true (Aron, Coups & Aron 2011). This would mean a greater risk of putting a product on the market that does not work. .05 is too high a risk to take, for replacing the standard treatment.
26
The alpha level for this would be 0.05. This alpha level is adequate because the outcome of a type one error would not be dire. The probability of rejecting the null when the null is true would be only 5% and the issue here does not warrant a more stringent approach.
27.
Step 1 Ho Mu=200
H1 Mu > 200
Step 2
The alpha level would be 0.05
T=1.66
Step 3
Conduct a one sample t-test
One Tailed test
Xbar-X/s/Square root n
217-200/39/sqt 100
17/3.9
t=4.36
df=99
Step 4
Compare tobs to t crit
4.36 is larger than 1.66
We therefore reject the null hypothesis
Conclusion- the serum levels in the sample is of concern, it is significantly higher than normal.
28
Step 1
Hu-Mu=200
H1-Mu
References
Aron, a., Coups E.J. & Aron E.N. (2011). Statistics for the behavioral and social sciences:
A brief course. New York NY Prentice Hall.
Creswell J.W. (1994).Research Design: Qualitative and Quantitative approaches. London: Sage
Publications
Philosophy Nietzsche often identified life itself with "will to power," that is, with an instinct for growth and durability. This concept provides yet another way of interpreting the ascetic ideal, since it is Nietzsche's contention "that all the supreme values of mankind lack this will -- that values which are symptomatic of decline, nihilistic values, are lording it under the holiest names" (Kaufmann 1959). Thus, traditional philosophy, religion, and morality
We have also talked about the "blue print" of a study, or the logical model of proof which guides the researcher throughout the entire study -- i.e. The research design. It is by which the investigator determines the relationships between variables being tested. We have discussed true experiments, its nature and validity issues as well as quasi-experimental designs. We also provided a discussion of the difference between these two designs. What
In other words, it's all well and good for McKevith to focus only on the hard figures (fiber content, what makes up each cereal, etc.) but Berketova is focusing on both parts of the research equation (everything McKevith looked at but also inclusive of consumer opinion, why consumers choose one cereal over another, personal opinions, etc.) and thus this research will be more illuminating if done correctly since the
And also, his conclusion is that "all technologies" designed to help advertising "will tend to push social evolution in this direction," e.g., in the direction of dominating citizens. Doesn't it seem possible that there are a few people in advertising who have no interest in dominating people's minds, but just want to make a living creating clever advertising to sell kites, and toothpaste, and English muffins? In this regard, Mander
Scientific Explanation Must every scientific explanation contain a law of nature? For those who support the Deductive-Nomological Account, the answer is yes. Discuss critically the arguments for and against this view, and present your own analysis of which is stronger. Date of Submittal Must every scientific explanation contain a law of nature? For those who support the Deductive-Nomological Account, the answer is yes. Discuss critically the arguments for and against this view, and
The literature review discussed risk factors for drop out extensively and presented studies that investigated risk factors for drop out. However, the research design did not clearly tie this research to the study examined by Dennison. Students considered at-risk were chosen by the school and proper parental consent was obtained. It is not known how at risk students were chosen. Therefore, it cannot be determined it sample bias existed in