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You are using the moving-average forecasting method based upon sales in the last three months to forecast sales for the next month. When making the forecast for last month, sales for the third month before were 805. The forecast for last month was 782 and then the actual sales turned out to be 793. What is your new forecast for next month?
As a condition of employment, Fashion Industries applicants must pass a drug test. Of the last 220 applicants 14 failed the test. Develop a 99 percent confidence interval for the proportion of applicants that fail the test. Would it be reasonable ..
in a survey of 891 us adults who follow baseball in a recent year 184 said that the boston red sox would win the world
Three hypotheses-ecocide, rat outbreak, and climate change-are candidates as explanations of why the society of Easter Island collapsed. In a paragraph, describe the seven steps of the scientific method
Suppose that the risk of allergies for the children of nonsmokers is 0.15. What is the risk of allergies for the children of smokers?
a physician knows the probability that a patient will recover from a certain disease is 60 when treated with the
a normally distributed random variable y has std dev. 800. a random sample of 100 observations was taken from y and
in designing an experiment involving a treatment applied to 5 test subjects researchers plan to use a simple random
If the sum of squares regression is 1,000 and the sum of squares total is 5,000. Given that the sum of squares residual (or error) is 4,000 what is the r-squared value?
Consider a Markov chain with states 0, 1, 2, 3, 4. Suppose P0,4 = 1; and suppose that when the chain is in state i, i > 0, the next state is equally likely to be any of the states 0, 1, ... , i - 1. Find the limiting probabilities of this Markov c..
Why does one use a Tukey's HSD rather than a t test when comparing mean differences in ANOVA?
Test the hypothesis that the graph should pass through the origin (i.e. α = 0). Explain what this means in practical terms - The air in a "clean room" used for the production of electronic devices is cleaned by filtering.
steam flows through a pipe at an average temperature t 200 c the inner and outer radii of the pipe are r1 8 cm and r2
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