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The marketing manager of a large supermarket chain would like to determine the effect of shelf space (X) on the sales (Y) of pet food. A random sample of 12 equal-sized stores is selected. Some calculations have been done for you: SSx = 400, SSy = 3.0025 and SSxy = 28. What is the value of the sample correlation coefficient?
A flour mill produces flour in small bags before distributing them to wholesalers. The average weight of each bags is 8 kg with a standard deviation of 0.5 kg.
You are a realtor with a small business. You use a simple 2 variable linear regression analysis for quick first glance house price estimates using square footage of the house.
If the speed of lights is 3.00x 10 to the power of 8 m/sec, how long does it take light to travel 2.29x 10 to the power of 11 m, the distance from the sun to Mars? Round to one decimal place.
You read a report that says, "On the basis of the simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76." What was the confidence level used to calculate this..
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
ABC Corp. is a firm with all-equity financing. Its equity beta is .80. The Treasury bill rate is 4 per cent and, and the market risk premium is expected to be 10 per cent. What is ABC's asset(equity) beta?
The average height of flowering cherry trees in a nursery is 11 feet. If the heights are normally distributed with a standard deviation of 1.6, find the probability that a randomly selected cherry tree in this nursery is less than 13 feet tall.
Find a 99% confidence interval for the difference in the mean number of calls between night and day.
Sample of newspaper readers was asked to report which newspaper they read and to point to whether they were blue-collar worker, white-collar workerNewspaper reader is selected at random. Determine the probability that person selected.
Within each of your current careers/ jobs, there are sets of data that can be analyzed. For example, a teacher can use a set of test scores, a dietician can analyze a set of patient weights and correlate them to incidences of diabetes, and a sales..
Let Z be a standard normal random variable. Determine the value of c such that P (Z > c) = 0.1251 is there a way to do this step by step so i can understand it?
What is the optimal strategy for producing 500 tons of newsprint pulp, 600 tons of packaging pulp, and 300 tons of print stock quality pulp at minimum cost?
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