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Researchers routinely choose an alpha level of 0.05 for testing their hypotheses.
What are some experiments for which you might want a lower alpha level (e.g., 0.01)?
What are some situations in which you might accept a higher level (e.g., 0.1)?
How can we be certain that surveys and statistics that we hear about in the media are accurate samples and unbiased? Is there a way to dissect the information and determine if a probability sample was used?
Adult men have weights that are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. Find the probability that the mean weight of the men in the sample is between 170 and 175 lb.
According to the local union president, the mean gross income of plumbers in the Salt Lake City area follows the normal probability distribution with a mean $45,000 and a standard deviation of $3,000.
Compute the approximate jp-value associated with the test statistic. Does the sample data support the null hypothesis at the a- 0.05 level?
The ACT is also distributed with meanof 21 and standard deviation of 4.7. Rachel wants to be in the 98th percentile on each test. What scores must she recieve on each exam?
Assume in a single game sudden death playoff between team A and team B that team A would win with probability 0.6.
under a recent u.s. food and drug administration fda standard for food contaminants 3.5 ounces of tomato sauce can have
A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695.
a car rental agency at a local airport has available 5 fords 7 chevrolets 4 dodges 3 hondas and 4 toyotas. if the
you conducted a chi-square goodness of fit test in your asci 691 capstone project. unfortunately you did not get the
how many tissues should a package of tissues contain? researchers have determined that a person uses an average of 41
to test the claim that there is no difference in the lifetimes in months of two brands of video games a sample of
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