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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.
The z test statistic
Describe the direction of the relationship between the Hamstring strength index 60°/s and the Shuttle run test and without using numbers, describe the relationship between the Hamstring strength index 120°/s and the Triple hop index.
Explain the difference between a normal Distribution and a binomial distribution. How do we know which one to use?
Write a brief note stating the circumstances under which cusum charting may be preferable to normal Shewart charting methods and calculate the mean of the sample values below, and suggest a suitable value for k, the cusum reference value.
What is the calculated value of the test statistic to test for the difference of proportions of nonconforming bag weights, between the two filling lines?
Omar Haaris receives 5000 tripods annually from Top-Grade Supplier to meet his annual demand
Suppose that you have 8 cards. 5 are green and 3 are yellow. The 5 green cards are numbered 1, 2, 3, 4, and 5. The 3 yellow cards are numbered 1, 2, and 3. The cards are well shuffled. You randomly draw one card.
3. The athletic department of the University of Colorado conducted a research to see how many students attended a home football game last season. The University has a population of 25,450, and the study showed that 870 of 1100 students sampled attend..
Brief literature review of factors influencing sales - investigate the relationship between advertising expenditure and sales.
The fact that customers tend to return purchased goods for any reason is a major frustration for the consumer electronics industry. (C. Lawton, The Wall Street Journal, May 8, 2008) Recently, it was reported that 68% of all returns were for "no troub..
How does the utility curve differ for risk seekers and risk avoiders? Are you familiar with one of these types? APA format 300-400 word count
Develop a scatter diagram for these data. Try to approximate the relationship between x and y by drawing a straight line through the data.
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