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The U.S.Food and Drug Administration (FDA) is responsible for approving new drugs. Many consumer groups feel that the approval process is too easy and, therefore, too many drugs are approved that are later found to be unsafe.On the other hand, a number of industry lobbyist are pushing for a more lenient approval process so that pharmaceutical companies can get new drugs approved more easily and quickly. Consider a null hypothesis that a new, unapproved drug is unsafe and an alternative hypothesis that a new, unapproved drug is safe.
(a) Explain the risks of committing a type I or Type II error.
(b) Which type of error are the consumer groups trying to avoid? Explain.
(c) Which type of error are the industry lobbyists trying to avoid? Explain.
(d) How would it be possible to lower the chances of both Type I and Type II errors?
A method of determining if relationships exist between two variables is:
1.consider a small experiment to investigate if biofeedback can reduce blood pressure. six subjects were randomized to
You listen to radio station for 1 hour, at arbitrarily selected time, and carefully observe that amount of advertising time is equal to 7 minutes. Compute z-score for this amount of advertising time.
In testing the difference between two means from two independent populations, the sample sizes do not have to be equal to be able to use the Z statistic.
questiondo problem at the end of the text book.nbsp there are two sets of test scores titled part 1 and part 2.nbsp the
A study in pediatric emergency care compared the injury severity between younger and older children.
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
A sample of n = 25 scores has a mean of M = 40 and a variance of s2 = 100. If this sample is being used to test a null hypothesis stating that m = 43, then what is the tstatistic for the sample?
A loan application is received during the day. By hand: Find the probability that the amount requested amount is $90,000 or more? Find the probability that the amount requested is between $75,000 and $90,000?
A university reports that the middle 50% of the SAT I math scores of its students were between 565 and 690, with half the scores above 605 and half below. What SAT I math scores would be considered outliers for that university?
What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confidence?
The table below shows the scores of a group of 15 students in mathematics and art: Determine if the locations of distribution of scores for these students differ significantly for the two subjects. Use the hand calculation method and then use PHSta..
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