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The Harris/Excite instant poll used to be online. Question displays on screen, and you just click buttons to vote "Yes," "No," or "Don't Know." On January 25, 2000, question was "Must female athletes be paid same as men for work they do?" In all, 13,147 (44%) said "Yes," another 15,182 (50%) said "No," and remaining 1448 said "Don't know."
a. Determine the sample size for this poll?
b. That's a much larger sample than standard sample surveys. In spite, we cannot trust result to give good information about any clearly defined population. Explain why?
c. It is still true that more men than women use Web. How might this fact influence the poll results?
A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively;
Stanford Binet IQ scores have a mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score.
If a total of 5,450 packages are shipped for .$1,926, determine how many individual packages were shipped and how many groups of 15 were shipped.
Compute the mean and variance of the following discrete probability distribution.
Based on this information, by what factor does the risk of having an accident increase due to driving while intoxicated?
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
At the .025 significance level, can we conclude that less than 88 percent of the orders are delivered in less than 10 minutes?
Suppose the organizers of the study are reconsidering their sample-size estimate. How many participants should be enrolled in each of the active and control intervention groups to achieve 80% power if a two-sided test is used with α = .05
Suppose that you wish to test the effect of lowering the soil ph on the number of lady ferns in an area. The researchers hypothesize that lowering the ph-level of the soil will lead to more ferns.
The Human Relations Department of Electronics Inc. would like to include a dental plan as part of the benefits package. The question is: How much does a typical employee and his or her family spend per year on dental expenses?
Determine the probability of exactly one success given Poisson distribution with mean of 2.0.
Market researchers would like to know if customers prefer a well-known brand over a generic brand of soft drink. They give a large sample of people the two drinks to taste in a random order and ask them which one tastes better.
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