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Assume that you work for the Food and Drug Administration. A pharmaceutical company has applied for approval to market a new arthritis medication. The research involved a test group that was given the medication and another test group that was given a placebo.
Respond to the following:
• Describe some ways in which the test groups might not be representative of the population of people with arthritis.
• If the company itself paid for or conducted its own research, would you have any concerns? Why or why not?
• If the study was not conducted as a blind or a double-blind test would you have any concerns? Why or why not?
Let x ¯ be the observed mean of a random sample of size n from a normal distribution having mean μ and variance σ2.
Joe has started an iphone booth in the mall. His francise booth and other startup costs total $82,000. Joe expects to pay $240 per iphone unit and sell them for $390 each. Joe needs to reach a 10% profit margin.
a civil engineer is analyzing the compressive strength of concrete. compressive strength is approximately normally
indicate whether each statement refers to a uniformly distributed variable normally distributed variable andor an
The tolerance of the automatic filling machine, leads to weights of bags being approximately Normally distributed with standard deviation 5g.
Between 1951 and 2000, there were 295 hurricanes in the Atlantic Ocean. Assume that the numbers of hurricanes in different years can be accurately modeled as i.i.d. random
At the .01 significance level, can we conclude that there is more variation in the selling prices of the oceanfront homes?
a sample of 800 voters revealed that 52 of them would vote for a specific issue. create and interpret a 95 confidence
Suppose you compute a simple linear regression on a single sample. Then you find additional data and recompute the regression on the larger sample and that the result is an increase in the regression slope.
Of the adults in Jefferson County, 10% have had CPR training
How to explain the influences on z-scores with constant variables in hypothesis tests with
q1. the discussion surrounding the anova is very important. this is a widely utilized statistical tool. what is the
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