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Finite populations allow you to use the confidence interval for a population mean μ to produce a confidence interval of the population total. To estimate the population total, multiply the lower and upper confidence limits of the estimate of μ by the population size N. So the confidence interval estimator of the total is (N*{x - tα/2s/sqrt(n)}, N*{x + tα/2s/sqrt(n)}) Pepsi wants to use this technique to determine if they should bid for an exclusivity agreement with NCSU. Such an agreement would bind NCSU to sell Pepsi soft drink products exclusively on campus. To determine if an exclusivity agreement would be profitable, Pepsi must estimate the total number of 12 ounce cans (or their equivalent) that NCSU students would buy per week. NCSU's Office of Registration and Records informs Pepsi that N = 28,000 different students are on campus at least once during a typical week. Pepsi randomly samples 500 NCSU students and asks them to record the number of 12 ounce cans of soda (or their equivalent) that they purchase on campus over the next 7 days. The results are in this Excel file cans of soda per week. Question. Use the data in the file to calculate a 95% confidence interval for the total number of 12 ounce cans of soda that NCSU students will purchase on campus in a week. lower limit of 95% confidence interval upper limit of 95% confidence interval.
Calculate a 95% confidence interval on the average weight of packaged mustard seed. Explain very carefully to the packaging workers what the 95% confidence interval numbers mean. Include your Excel output. Is there anything you would want to note ..
In particular, discuss whether there is enough information presented in the article to arrive at the same conclusion as reported."
What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line?
Find the probability that student A made no mistakes when entering a randomly selected form. Find the probability that student B made no mistakes when entering a randomly selected form.
A battery manufacturing plant normally operates two eight-hour shifts per day and 6 days per week. The manufacturer can produce 375 units per hour.
If 100 stolen cars are randomly selected, what is the mean and standard deviation of the number of cars recovered after being stolen?
Determine the probability that subscriber didn't rent the car during past 12 months for either business or personal reasons?
Machine is not filling the bottles completely. A sample of 8 bottles is taken. Is there enough evidence to support the consumer's conjecture at alpha = .10?
According to a report produced by the New South Wales Ministry of Health, 46% of hospitalisations occur in people aged sixty years and over (60+).
Which of the following sets of data provides the clearest diffrence between the two samples?
A CBS News/New York Times poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 92% confidence.
Compare the standard deviation for the heights of males and the standard deviation for the heights of females in the class.
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