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Use simple exponential smoothing with α = 0.33 to forecast battery sales for February through May. Assume that the forecast for January was for 22 set of tires.
Month
Automobile Tire sets sales
January
28
February
21
March
39
April
34
For the following scores, find the: A. Mean. B Median. C. Sum of squared deviation. D. Variance. E. Standard deviation.
Develop a scatter diagram for the data and write a brief summary.
Analyze the data using linear contrasts to make the following comparisons:
To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the numerator of the test statistic should be the one with:
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
Develop a hypothetical table of data using a grid of 3 rows and four columns.
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
Which of the following is true about the expected value of perfect information. It is the amount you would pay for any sample study.
Prepare a power curve for this decision rule
A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.
What is the appropriate conclusion based on the outcome of the hypothesis test?
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