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1. What is a hypothesis? What is the distinction between a hypothesis and a prediction?
2. What information does the researcher communicate in each of the sections of a research article?
A researcher looks at the effect of 3 different drugs on 3 different groups of 10 people. Numbers refer to stress levels, with lower numbers being lower stress.
Clearly identify the independent and dependent variables you would study. Determine whether an independent-samples or related-samples t test is most appropriate and why. Generate the statistical null and alternative hypotheses.
if the random q has a continuous uniform distribution with parameters a0 and b3 find the probability that the roots of
calls to the help line of a large computer distributor follow a passion distribution with a mean of 20 calls per
A membership drive in a metropolitan area resulted in 500 new members. What is the probability that 175 or more of the new members are significantly overweight?
Hypothesis test for the difference between two means - To make the data comparable, certain features, such as the deductible amount and limits of liability, are standardized.
Listed below are birth weights (in kilograms) of male babies born to mothers on a special vitamin supplement (based on data from the New York State Department of Health).
a university with a high water bill is interested in estimating the mean amount of time that students spend in the
Suppose that the probability that a new medication will cause a bad side effect is 0.03. If this medication is given to 150 people, what is the probability that exactly three of them will experience a bad side effect? Place your answer, rounded to..
in a region 80 of the population have brown eyes. if 12 people are randomly selected find the probability that at least
the u.s.food and drug administration fda is responsible for approving new drugs. many consumer groups feel that the
A Department of Trasporta repot about air travel found that nationwide, 76% of all flights are on time. What is the probablity that you will have have excatly 80 flights on time?
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