Reference no: EM133352813
Questions
1. Two methods of drawing statistical inference are:
A. Hypothesis testing and Estimation
B. Hypothesis testing and Standard error of estimate
C. All of the above
D. None of the above
2. Parameters are represented by the calculated value from a sample data.
A. True
B. False
c. None of the above
3. In testing a hypothesis, the goal is to test the claims about:
A. Parameters
B. Statistics
C. All of the above
D. None of the above
4. As a sample gets smaller and smaller, the sample mean becomes a better reflection of the population. mean
A. True
B. False
C. None of the above
5. The standard deviation of a sample is directly proportional to the square root of its sample size.
A. True
B. False
C. None of the above
6. The sampling distribution of x-bar is the hypothetical distribution of the means from all possible samples of size n taken from different populations.
A. True
B. False
C. None of the above
7. Regarding Normal Approximation to the Binomial, one rule states that the Normal Approximation applies when the products of n, p, and q is equal to 5 or greater.
A. True
B. False
C. None of the above
8. Researchers are interested in conducting an analysis about the effectiveness of a new drug aimed at increasing overall survival among HIV positive patients coinfected with Hepatitis C. Current national data claims that5 year survival for patients with HIV and Hepatitis C is 30%. After treatment analysis, the research team estimates that 5 year survival among those treated with the new medication is 40%. Which of the two numbers (30% and 37% represents the parameter?
A. 30%
B. 40%
C. Both
D. None of the above
9. Sampling distributions of mean tend to be Normal with an expected mean value equal to the population mean and the expected standard deviation different from the population standard deviation.
A. True
B. False
C. None of the above
10. The first step in hypothesis testing is to state:
A. the research question
B. the null hypothesis
C. the research hypothesis
D. the research problem