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Sally wanted to build a multiple regression model based on advertising expenditures and A coffee business price index. Based on the selection of all normal values she obtained the following:
1. Multiple R = 0.738 2. R square=0.546
By using lagged values she came up with the following:
3.Multiple R=0.755 4. R square=0.570
Explain the differences in using these different methods. How could the Coffee business further optimize this model.
Tourism is one consideration for The coffee future. A survey of 1,233 visitors to India last year revealed that 110 visited a small cafe during thei visit. Sally clains that 10%of tourists will include a visit to a cafe. Use a 0.05significance level to her claim. Would it be wise for her to use that claim in trying to convince mangement to increase ther advertising spending to travel agents? Explain.
Finally, what additional strategy (or varied) would she reccommend to the key decision maker to solve the challenge. Prepare a 350 word memo to the key decision maker advocating this reccommendation.
Fifty samples of size 600 were drawn from a manufacturing process and the number of defectives in each sample was counted.
A recent survey of frozen convenience meals found a correlation of r=0.768 between calories and fat content in the sampled meals.
What is the probability of a false negative test (the probability that a person having muscular distrophy tests negative)?
Which confidence interval has the most variability?
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales.
A computer password consists of four characters. The characters can be one of the 26 letters of the alphabet. Each character may be used more than once.
What is the probability of getting seven heads in a sample of twenty coin flips? Is this significantly different from the population in which P = 0.50 if the alpha is 0.05?
Event A occurs with probability 0.2. Event B occurs with probability 0.3. Event C occurs with probability 0.4. If A, B, and C are disjoint, then
An insurance company sells $300 deductible annual automobile insurance policies to a certain category (age, driving records) for $1000.00 The insurance company has set four different accident types
A neuropsychologist compare the auditory abilities of blind versus normally sighted rats. He predicted that the visually impaired rats would have better auditory development than normally sighted rats.
Public health statistics indicate that about 26.4% of Americans smoke. Suppose a random sample of 50 people is selected. Approximate the distribution of the same proportion with the normal model.
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