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A pharmaceutical company conducts a study to evaluate the relationship between length of time taking drug X and size of tumor. They enlist 2400 patients with the same type of benign tumor who have been on drug X for varying lengths of time (measured in days). They find that the longer the patient is on the drug, the smaller the patient's tumor size (measured in volume). In fact, they report the results as r(2398) = -.21, with significance of p < .0001. What is your initial perception of this information? What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug X and the size of the tumor? Support your responses.
The table below gives the loan requests (in thousands of dollars) for the past 12 months. Would you say that the local business economy is heating up or cooling down? Explain your answer. Graph the data.
A financial analyst is interested in estimating the average amount of a foreign loan by U.S. banks. Construct the Stratum weights for proportional allocation
question 1 kelson sporting equipment inc. makes two different types of baseball gloves a regular model and a catchers
If no more than 5% of the containers are to weigh less than 15.80 oz., what must the standard deviation of the weights equal?
For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.
a study of adverse symptoms in users of over-the-counter pain relief medications assigned subjects at random to one of
Record the tumor grade and whether the patient was still alive one year after surgery. University Hospital County Hospital Private Hospital Which hospital has the best record?
determine the error for each of the following forecasts. compute mad and mse. period value forecast error 1 202 - - 2
a study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 chevrolet cavalier shows that
To find the probability values in case of raw data, binomial, normal
a manufacturer of tires wants to advertise a mileage interval that excludes no more than 10 of the mileage on tires he
a pharmaceutical company receives large shipments of aspirin tablets. the acceptance sampling plan is to randomly
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