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A researcher wishes to test the claim that the average cost of tuition and fees at a 4-year college at least $7000. She selects a random sample of 81 colleges and finds the mean to be $6900. The standard deviation is $500.
a) Is there evidence to support the claim at α = .06?
b) Suppose no claim was made but the researcher is thinking of making a claim using a 95% two-sided confidence interval. Using the same data, construct the CIE interval.
Does this sample suggest that women shoppers in Tampa differ from the preferences expressed in the U.S. Shopper Data-base? What is your conclusion based on both the p-value and critical-value approaches? Use α = .01.
Complete an ANOVA table, and use this information to determine whether there is any evidence to suggest that at least two population mean waiting times are different. Use a = 0.01.
the following data were obtained from a survey of college students. the variablenbspxrepresents the number of
Write a 1,050-word report based on the Bell Computer Company Forecasts data set and Case Study Scenarios.
The rise of gasoline prices along with record profits at Exxon-Mobile produced stories of corporate greed. How could you use a statistical model to explain the rise of prices at the pump?
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if i go into a pizza house and i have the choice of having one of 3 different types of dough with one of 7 different
How many televisions must be sampled so that a 99% confidence interval will have margin of error of 6 hours?
U.S. women's soccer-2012 Earlier, we examined data on the number of goals scored by the U.S. women's soccer team in games played in the 12 months prior.
Your local public library reported last year that the average number of children visiting the library each day was 77. You would like to test whether
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