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Q1. Consider the following time series.
t 1 2 3 4 5 6 7
Yt 120 110 100 96 94 92 88
a. Construct a time series plot. What type of pattern exists in the data?
b. Develop the linear trend equation for this time series.
c. What is the forecast for t 8?
Q2. Consider the following time series.
Yt 82 60 44 35 30 29 35
b. Using Minitab or Excel, develop the quadratic trend equation for the time series.
Ophelia O'Brien, VP of Consumer Credit of American First Banks (AFB), monitors the default rate on personal loans at the AFB member banks.
If hypothesis test for single population variance is to be conducted by using significance level of to 0.10, a sample size of n = 16, and test is a one-tailed upper-tail test, the critical value is?
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation 0.3 hour.
Reliable Furniture is a family business that has been selling to retail customers in the Chicago area for many years. They advertise extensively on radio and TV, emphasizing their low prices and easy credit terms.
1.an srs of 20 third grade children is selected in chicago and each is given a test to measure their reading ability.
when 325 college students are randomy selected and surveyed its found that 117 own cars. construct a 99 confidence
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A standard deviation of $1500. at the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
Which of the following is most likely a parameter as opposed to a statistic? The average score of the first five students completing an assignment
Calculate the sample statistics and determine whether there is evidence that the mean blackness is less than 0.97. Write a memo to management that summarizes your conclusions.
We have already been introduced to sensitivity analysis via the geometry of a simple example. We saw that the values of the decision variables and those of the slack and surplus variables remain unchanged even though some coefficients in the objec..
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