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My example is this: I have been approached by a pharmaceutical company that has developed a new drug, which is supposed to be effective in the treatment of schizophrenia. Before I begin mass-producing the drug, the company wants to be sure that the new drug is more effective than the one they are currently producing. The company has hired me to design a research study to determine the effectiveness of the new drug, in comparison to the old one.
My question is: what type of research design would I use for this study and why? How would I determine the effectiveness of one drug over the other?
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.
How is data screening related to the assumptions of the statistic you will choose to analyze your data?
If the population mean is 36, are the serial killers significantly more introverted at the .05 level? Perform the appropriate one-tailed test.
A regional director responsible for business development in the state of pennsylvania is cocerned about the number of small business failures. If the mean of small businsses failures per month is 10,
Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that:
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
Determine the probability that: a) Exactly 3 will have this mild side effect.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
You're operating a business in very competitive market. You're not yet the dominant player, but you have invested heavily in marketing and product development and it has paid off with a steady growth rate of 10%.
By using the 0.10 level of significance, is there evidence that the population mean is above the $300?
What does the standard deviation mean? Interpret the standard deviation relative to the average or mean?
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