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By using R code
Data on last year's sales ( y, in 100,000s of dollars) in 15 sales districts are given in the file sales. This file also contains promotional expenditures(x1, in thousands of dollars), the number of active accounts(x2), the number of competing brands(x3), and the district potential(x4, coded) for each of the districts.
Fit the proposed model in (a) and calculate estimates of βi, i=0,1,...,4, and σ2.
You have just received an inheritance of $10,000 and you decide that you should invest the money rather than blow it on frivolous items. You have decided that you will invest the money in one of two types of mutual funds. The first type that you are ..
Determine the expected value of the number guessed by the caller.
Somerset Furniture Company's Global Supply Chain
1. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 30% earned B's, 25% earned C's, 25% earned D's and the rest either failed or withdrew from the course. Dr Johnson is a new professor teaching "Basic Busi..
Suppose Ana has a pair of dice (the traditional six-sided kind). Let X= the difference of the largest minus the smallest number showing on the dice. Find the PMF for X.
It has been stated that 75% of the population have a smart phone. If you randomly choose 10 people, what is the probability that at least 9 people will say they have a smart phone?
Let X denote the mean of a random sample of size 128
The shelf life of a battery produced by one major company is known to be Normally distributed, with a mean life of 4 years and a standard deviation of 1 years.
Statistics from Cornell's Northeast Regional Climate Center indicate that Ithaca, NY, gets an average of 35.4" of rain each year with a standard deviation of 4.2". Assume the data is normally distributed.
We examined the use of heparin-PF4 ELISA screening for heparin-induced thrombocytopenia (HIT) in critically ill persons. Using C-serotonin release assay (SRA) as the way of validating HIT, the authors found that in 31 patients tested negative by SRA,..
Find the Expected Value of Marketing - the marketing manager at Cooke Collectibles has analyzed the possible demand levels
Scores on a marketing exam are known to be normally distributed with mean and standard deviation of 60 and 20. a) Find the probability that a randomly selected student scores between 50 and 80. b) Find the probability that a randomly selected student..
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