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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.
the mean of sample a is significantly different than the mean of sample b. sample a 59 48 74 62 87 73 sample b 53 67 78
a winery owner wants to determine if one type of her wine is significantly more popular than another. she records the
Determine the 95% prediction interval for the overall rating of an individual notebook computer with a $1000 street price, a performance score of 100, and a 2.50-hour battery life.
What is your estimate of the probability that a randomly sampled subject receiving drug A will have less of a reduction in reaction time than a randomly sampled subject receiving drug B.
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
describe the assumptions of normality and homogeneity of variance. when these assumptions are violated what are your
If an auction house is selling products to risk neutral buyers, which of the types of auction would you recommend? If you are a potential buyer, what might your strategy be? Support your answers using economic analysis learned in this course.
In order to compare the mean Hemoglobin (Hb) levels of well-nourished and undernourished groups of children, random samples from each of these groups yielded the following summary.
What is the probability that four cards drawn at random from a deck of cards are of different denominations if they are of different suits?
problem one the manager of a catering company is using the number of people in the party to predict the cost of the
Determine the type of distribution and then answer the questions.
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 540 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml. A sample of 36 bottles shows a mean fill of 538 ml...
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