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Manufacturer of mole and gopher poison has experienced the following monthly demand for an environmentally sound pesticide poison.
Month Actual demand (in cases)February 640March 840April 770May 950June 875
a. Using a Average method, what would the forecast have been for July?b. What would the unweighted three-month simple moving average have been for July?c. Which forecasting method would you recommend? Why?
An automobile manufacturer advertises that the mean petrol consumption of its new hybrid car does not exceed 4.6 litres per 100 km. An independent company decides to test the manufacturer's claim by selecting a random sample of 16 vehicles and mea..
Nathan wants to approximate a binomial probability by normal curve areas. The number of trials is 50 and the probability of success for each trial is 0.95
Use the normal distribution to approximate the following probability: According to the most recent Davenport student profile, 47% of students have children under 17 living at home with them.
Find the critical value for a right-tailed F-test when alpha=.05 the degrees of freedom for the numerator (d.f.N.) are 15, and the degrees of freedom for the denominator (d.f.N.) are 21.
Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
The accounting department at Western Materials Inc. national manufacturer of unattached garages, reports it takes two construction workers of a mean of 32 hours and standard deviation of 2 hours to erect Red Barn MODEL.
A regression of height (X, in inches) on hourly earnings (Y, in dollars), yields the following results: What is the value of b1 in the regression Y = b0 + b1X?
A jar contains 12 marbles, 5 of which are blue and 7 of which are red. If 4 marbles are chosen at random and without replacement, what is the probability of selecting 3 blue ones and 1 red one?
Determine the control limits for the mean and the range. Plot the control limits for the mean outside diameter and the range.
At the .01 significance level, is there a difference in the use of the four entrances?
If a total of 5,450 packages are shipped for .$1,926, determine how many individual packages were shipped and how many groups of 15 were shipped.
To determine whether there is a difference in the proportion of viewers watching the three channels.
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