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Despite the growth in digital entertainment, the nation's 400 amusement parks have managed to hold on to visitors, as the following data show:
a. Plot the series. Does the linear trend model or the exponential trend model fit the series best?
b. Estimate both models. Verify your answer in part a by comparing the MSE of the models.
c. Given the model of best fit, make a forecast for visitors to amusement parks in 2008 and 2009.
Using a carefully worded sentence, report the 95% confidence interval for the percentage of students who plan to choose economics.
If the test is positive, what is the probability that this person actually has heart disease?
Physical Sciences Workers at the Daivik diamond mine in northern Canada extract approximately 1800 DMT (dry metric tons) of ore per day.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
How would you expect the standard deviation for these data to differ from what you found in Exercise?- Check your answer to part (a) using the One-Variable Statistical Calculator applet.
a quality engineer knows from past data that in a shipment lot the number of wire cables that have tensile strengths
Explain how our current income tax system could easily be converted into a system which taxes consumption.
1. Suppose you are given a particular set of data and found that r = 2.5. How would you interpret this result?
If the airlines' goal was to attain the same proportion of on-time arrivals as in 2004, do the preliminary results indicate that they have met this goal? Support your assertions.
Tiger again. Let's take one last look at the Tiger Woods picture search. You know his picture is in 20% of the cereal boxes.
A computer game. A multimedia statistics learning system includes a test of skill in using the computer's mouse. The software displays a circle at a random location on the computer screen.
Evaluate the advantages and disadvantages of evolving healthcare information systems. Explain your recommendation on the future of HMIFS.
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