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In a clinical trial, we measure the systolic blood pressure of a group of patients with high blood pressure. The average blood pressure for these subjects is 125, with a standard error of the sample mean of 0.16. If the sample variance is 256, what is the sample size of this study?
given two samples a and b with population size of a 30 sample variance of a 45.3 and a population size of b 25 sample
Let us suppose you have taken 100 samples of size 49 each from normally distributed population. Compute standard deviation of sample means if population's variance is 16. Area to left of ‘z' is 0.9976.
What are the total cash flows in year three when the asset is sold?
The mean score on a standardized psychology test is supposed to be 50. Believing that a group of psychologists will score higher, we test a random sample of 11 psychologists.
WonderDrug Company wants to test the effectiveness of a new headache drug. What sampling technique (simple random, stratified random, cluster, convenience) is WonderDrug Company using in each of the following studies?
What is the probability that the mean starting salary is between $31,000 and $33,000 - Graduates from a graphic arts course at a community college have a mean starting salary
The selection is to be random, and at the school there are 8 tenured faculty members in accounting. What is the probability that the committee will contain?
The Office of Federal Housing Enterprise Oversight (www.ofheo.gov) collects data on various aspects of housing costs around the United States.
Search an online academic virtual library or other websites such as salary.com to gather information. Use the information you find to evaluate the labor market of these countries ensuring that you address these topics:
Perform a hypothesis test to determine if there is a significant correlation (α =0.05) between number of hours of overtime worked and hours of sleep
In using Table B repeatedly to choose samples or do randomization for experiments, you should not always begin at the same place, such as line 110. Why not?
What is the area under the normal curve that describes the probability that less than 58 households have a gas stove
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