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Evaluate 2-month moving average and Exponential smoothing by MAD.
The following data represents demand for company ABC's products for the last 10 months.
Months
Demand
1 2 3 4 5 6 7 8 9 10
450 463 520 500 510 516 534 525 530 534
(a) What is the forecast for month 11?
(b) Which provides a better forecast the two-month moving average or exponential smoothing? Explain using the mean absolute deviation.
Find a 95% confidence interval for the mean amount of money µ spent at the waiter's tables.
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
Given that consumer changed te brands, what is the probability that consumer purchased fewer products than before?
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
To test there is significant difference among the mean of income using ANOVA. A developer of real estate is considering investing in a shopping mall on the outskirts of Atlanta, Georgia.
Create a 90% confidence interval for proportion of all kernels that would not pop.
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots.
The student with the 92 found a grading error on her exam and her correct grade was 95. There were no other grading errors. After correcting this student's paper, the five number summary for the midterm exam will be
A customer from Cavallaro's Fruit Stand picks a sample of 5 oranges at random from a crate containing 80 oranges, of which 6 are rotten. What is the probability that the sample contains 1 or more rotten oranges? (Round your answer to three decimal..
Which combination of factors has greatest likelihood of rejecting null hypothesis?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho = 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
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