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Say a fast-food franchiser is considering building a restaurant in a local mall. According to franchise headquarters, a site is acceptable only if the number of pedestrians passing the location averages more than 100 per hour. A random sample of 40 hours produced a sample mean of 105 persons and a sample standard deviation of 12 persons. Do these data provide sufficient evidence to establish the site is acceptable at a 95% confidence level? Do the hypothesis test using a confidence interval and state a p-value.
If you arbitrarily grab 2 socks out of drawer determine the probability that you grab a matching pair?
A newspaper conducted a statewide survey concerning a proposal to raise taxes to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 1200 registered voters and found that 580 would vote to raise taxes. Let..
Describe the methods for interpretation of categories (row or column) in CA. Can categories always be directly compared based on proximity in the perceptual map?
The population of IQ scores forms a normal distribution with a mean of µ = 100 and a standard deviation of o = 15. What is the probability of obtaining a sample mean greater than M = 105.
Explain how the power of a hypothesis test is influenced by each of the following. Assume that all other factors are held constant.
Is there meaningful relationship between grades and SAT scores? If student scores 450 on the SAT, what do youbelieve his or her GPA will be?
Determine the probability that the project will be completed in 80 days or less.
In a sample of 64 patients, suppose that 47 showed allergic reduced reaction and 17 show increased reaction. Are these results sufficient to conclude a significant effect?
When it comes to advertising, "'tweens" are not ready for the hard line messages that advertisers often use to reach teenagers. The Geppeto Group study found that 78% of 'tweens understand and enjoy ads that are silly in nature.
A jar contains black and white marbles. Two marbles are chosen without replacement. If the probability of selecting a black marble and a white marble is 0.34, and the probability of selecting a black marble on the first draw is 0.47,
At significance levels of .05 and .01 test H 0 : the factors A and B are independent.
If the average daily intake among 25-34-year-old males in the general population is 15 g, then, using a significance level of .05, test the hypothesis that the intake of linoleic acid in this group is lower than that of the general population. Als..
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