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A manufacturer has experienced the following monthly demand for one of their products.
Month Actual demand (in cases)
February 1500March 2860April 2950May 3490June 3000
a. Using a three month moving average, what would the forecast and MAD have been for July?
b. What would the three-month weighted moving average (using .4, .4, .2) and MAD have been for July? What would the MAD be using a regression?
c. Which forecasting method would you recommend? Why?
In an early study, researchers at an Ivy University found that 33% of the freshmen had received at least one A in their first semester.
She collected the employee performance ratings recorded before and after workshop attendance and stored the paired ratings for all 35 in Perform.
The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
Based on this information, confidence level would be 90% that population mean is somewhere between?
Prepare a scatter plot and Interpret the meaning of slope, b1, in this problem
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
The mean math score for fifth grade students at Smart Elementary is 90 with a standard deviation of 8. The fifth grade students are tested each year to determine if the mean score remains the same.
Construct a 99% confidence interval estimate for the population mean amount of paint included in a 1-gallon can.
No, there is not sufficient information to reject the hypothesis that the proportion of cats and the proportion of dogs that sleep more than 10 hours per day are the same because the test value -0.65 is inside the acceptance region (-1.96,1.96).
What percentage of men are too tall to fit through a standard doorway without bending, and what percentage of women are too tall to fit?
If Z = 1.96, s = 3, and E = 1, determine the correct sample size.
Bay area community college (BACC) has collected data comparing the starting salaries of their graduating students with last names beginning with the letters A through M with those whose last names begin with N through Z.
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