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Suppose that you were interested in investigating the effect of a drug that is to be used in the treatment of patients who have glaucoma in both eyes. A comparison between the mean reduction in eye pressure for this drug and for a standard treatment is desired. Both treatments are applied directly to the eye.
a. Describe how you would go about collecting data for your investigation.
b. Does your method result in paired data?
c. Can you think of a reasonable method of collecting data that would not result in paired samples? Would such an experiment be as informative as a paired experiment? Comment.
Name three elements of the inferential statistical analysis.
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim?
While taking a multiple choice test, I realize I cannot answer the 5 questions without guessing. There are 5 choices for each question, A B C D or E.
on a normal distribution with a mean of 500 and a standard deviation of 97 what percentage of cases will fall between
You are the quality control manager at Mars, Inc and you want to prove the company's claim that 10% of all M & M candies are blue. Is it possible to prove that claim using methods of hypothesis testing? Why or Why not?
in each case determine whether the study in question is a controlled experiment or an observational study justify your
One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations of X and Y?
an electronics store has received a shipment of 25 table radios that have connections for an ipod or iphone. ten of
the number of incoming calls to a mail order call center is a poisson random variable with parameter of ?1.8min. what
explain how the power of a hypothesis test is influenced by each of the following. assume that all other factors are
Are these data consistent with the hypothesis that a vacuum tube's lifetime is exponentially distributed with a mean of 50 hours?
A recent study of the USA births showed the average birth weight of a male was 8 lbs.; the average weight of a female newborn was 7.4 lbs.
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