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) Make an Excel graph of the data on U.S. online advertising spending. (b) Discuss the underlying causes that might explain the trend or pattern. (c) Use Excel, MegaStat, or MINITAB to fit three trends (linear, quadratic, exponential) to the time-series. (d) Which trend model do you think is best to make forecasts for the next 3 years? Why? (e) Use each of the three fitted trend equations to make a numerical forecast for 2007. How similar are the three models' forecasts?
Produce trucks arrive at the weigh station at the California border at a rate of 3 per hour according to a Poisson distribution. Livestock trucks arrive at that same weigh station at a rate of 2 per hour according to a Poisson distribution.
A survey of 10 different suburbs in Dallas Texas found the average gasoline to be $ 1.294 a gallon with a standard deviation of $ .0526. What is the critical value using a=.05 and what is the test value.
Of the next 15 people that invest in this project, what is the probability that 5 or less people will result an annual net cash flow of at least $100,000.
When adding or subtracting expressions, how do you identify the like terms?
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
He is twice as likely to visit city X than the other city. Obtain the transition probability matrix. Also determine the proportionate visits by him to each of the cities in the long run.
Suppose that each light bulb works independently of the other light bulbs. What is the probability that all eight of the light bulbs work?
From a population of cereal boxes marked "12 ounces," a sample of 81 boxes is selected and the contents of each box is weighed. You want to test whether the population mean is different from 12 ounces.
Can the president conclude that the average family income at his school is significantly different than the population mean family income of the reported university?
Hypothesis test for one population mean - What is the alternative hypothesis and What is the null hypothesis?
bachelor's degrees; and of 75 male nurses, 34 had bachelor's degrees. If a nurse is selected at random, and the probability that the nurse is? A female nurse with a bachelor's degree.
She chooses 40 new home sales at random and determine that average closing costs are $6600. Standard deviation of population is $120. Test her belief at µ = 0.05.
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