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Can you please explain what relative efficiency is in statification vs simple randomisation mean?
Explain how you would use these 100 volunteers in a designed experiment to test the vaccine. Include all important details of designing the experiment.
1 a random sample of 60 college graduates results in a mean time to graduate of 4.58 years with a standard deviation of
(i) Construct a frequency distribution & relative frequency distribution for the above data with 7 classes.
In a factory, there are m operating machines and s machines used as spares and ready to operate. The factory has k repairpersons, and each repairperson repairs.
Problem: Marginal distributions. Give (in percents) the two marginal distributions, for marital status and for job grade.
Estimate the true proportion of all Americans who are in favor of gun control legislation using a 90% confidence interval.
Suppose we know that the proportion of high school students in the U.S. that smoke is .10. We now visit the local high school and sample 50 students
If we conduct statistical inference for this problem, what is (are) the parameter(s) we are conducting inference on? (You may state your answer in words or symbols)
(i) Verify that this is a legitimate finite probability model. (ii) Describe the event X (iii) Express the event "lifted weights at least once" in terms of X. What is the probability of this event?
Suppose that four tickets will be given prizes in a lottery having 30,000 tickets. What is the probability of winning at least one prize if you buy 1,000 tickets?
Suppose investigators are interested in a population of patients who have been recently diagnosed with a particular kind of colon cancer (nonpolypoid colorectal neoplasm).
Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to i..
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