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Question: Medicine and Clinical Studies An abdominal aortic aneurysm (AAA) is often signaled by inflammation. A cardiovascular magnetic resonance study was conducted to identify wall edema as a marker for inflammation. Independent random samples of AAA and normal patients were obtained, and the MR-STIR intensity values were recorded for each.12 Assume the underlying populations are normal with unequal variances.
a. Is there any evidence to suggest that the population mean intensity values are different for the two patient groups? Use a = 0.05.
b. Find bounds on the p value for this hypothesis test.
the marketing manager of a large supermarket chain faced the business problem of determining the effect on the sales of
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
is the following distribution a probability distribution. explain your answer.x px0 0.361 0.232 0.083 0.144
If you wish to test the effectiveness of a newly designed Web page in regard to its download time, how will you set up the null and alternative hypotheses?
a an archer is shooting 8 arrows at a target. in each shot his probability of hitting the target equals 0.4. what is
from their 50 data points washington dc not in the study the researchers calculated a correlation of 0.988. based on
The amount of time a bank teller spends with each customer has a population mean, µ, of 3.10 minutes and standard deviation, s, of 0.40 minute.
a fair coin is tossed 20 times and x6 heads are observed. let pphead. a test of hop.5 versus ha plt.05 is to be
Pain empathy and brain activity. Empathy refers to being able to understand and vicariously feel what others actually feel.
a random sample of 36 radio stations is selected in order to estimate the avaerage charge for the same fixed-length
The following data give the letter grades of 20 students enrolled in a statistics course. Construct a bar graph.
Based on these results, is there significant difference between attitudes for males and for females? Use two tailed test with alpha = .05.
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