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Given the following data on the number of pints of ice cream sold at a local ice cream store for a 6-period time frame.
If the forecast for period 5 is equal to 275, use exponential smoothing with a=40 to compute a forecast for period 7.
what is the probability that a salesperson selected at random will have below average sales ability and fair potential
Explain the differences between qualitative and judgmental statistical time-series, and explanatory/causal forecasting models.
Provide a 95% confidence interval for the difference between the two population means. Compare the means of population 1 and population 2. Are they equal? Show your test procedure.
if the tail of a normal distribution contains exactly 2.5 of the scores then what is the z-score value that separates
In teaching the role of statistical application in Health Science, the importance of reliable and valid data is very critical in research process.
A reasearcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that the treatment population mean is smaller than the control po..
Please use words to describe the solution, not just symbols. (basically, explain what is going on in addition to an answer) Use a math symbol editor where appropriate.
Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies.
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
The average number of typos on one page of a manuscript is 8. What is the probability that 4 to 6 type appear on 2 pages of the manuscript? Imagine Poisson distribution.
What do we need to consider when we try to select a test? Choose one of the tests; discuss your understandings of that test.
What are the 2 ways in which researchers assess the reliability of their measures? Be sure you understand the difference among these 2 approaches to reliability.
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