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The following data summarizes the historical demand for a product.
Month Actual demand
March 20
April 25
May 40
June 35
July 30
August 45
Employ a four period moving average and determine the forecasted demand for August.
Put your answer in the form xx.x with no additional numbers or symbols.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Concept of statistical signi cance
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
Rank the funds by using this alternative measure of risk. Which, if any outperformed the market on the risk-adjusted basis.
Find the probability that a women develops breast cancer given that she has a family history of breast cancer._____________
Illustrate for what value does probability XYZ will offer a competing product will ABC be indifferent among the alternatives.
They are thinking of introducing a new flavour, maple-marshmallow Frumpies, and want to know whether children will prefer the new flavour to the old one. Design a completely randomized experiment to investigate this question.
At the Statsville County Fair, the probability of winning a prize in the ring-toss game is 0.1. Show the probability distribution for the number of prizes won in 8 games.
Q2 is dummy variable equal to 1 in second quarter and 0 otherwise; and Q3 is final dummy variable equal to 1 in third quarter and 0 otherwise. Determine the Base Quarter?
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
Determine the probability that the project will be completed in 90 days or less.
What if the assumption E[u/x]=0 is not satisfied? Illustrate using an example. Explain the relationship represented by a population regression function.
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