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This question has to do with power. Suppose in a clinical study you have two groups with 10 subjcects in each group. No significance at the .05 level is found but there is a medium effect size, which is judged to be of practical significance. What should I do in the future replication study? It has been mentioned in my textbook that there can be too much power and this is related to the “sledgehammer effect” What does this mean? How does this affect the study?
Given your answer to part a and a stated interest rate of 9 percent on the total amount borrowed, what is the effective rate on $400,000 actually being used?
At α = 0.01, is the degree of certainty independent of credits earned?
Researchers have determined that patients who are smokers have 18% chance of contracting a serious illness. What is the probability that a given patient if the patient has a serious illness?
Indicate your hypotheses, decision rule, statistical decision and management conclusion using the critical value and then find the p-value and state your decision rule, statistical decision and management conclusion using this method.
What then is the probability that a shaft will be acceptable? Suppose that the diameter of the shaft is a random variable that is Normally distributed.
A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695.
Eagle airlines' planes hold only 15 people. Past records indicate that 20% of the people making a reservation do not show up. We will assume that all reservations are independent; that is each reservation is for one person and these reservations a..
Packets filled consecutively by the machine. Calculate the limits within which the weight of the packets should lie assuming that the machine is not been classified as faulty.
A college accepted 512 of the 1,600 applicants one year, and 520 of the 1,300 applicants the next year. Can we conclude that the admissions rate was higher the second year than the first year?
If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.
Should the engineering firm be concerned? Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
Considering a newly arriving customer to the checkout line. what is the probability that this customer will not have to wait behind anyone.
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