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Which of the following is true regarding the two smoothing constants of the Forecast Including Trend (FIT) model (which is also called exponential smoothing with trend adjustment)?One constant is positive, while the other is negative.They are called MAD and RSFE.Alpha is always smaller than beta.One constant smoothes the regression intercept, whereas the other smooths the regression slope.Their values are determined independently.
Find out the estimate of the population mean.The mean daily sales at the Stop and Go are $20,000 for a sample of 40 days. The standard deviation of the sample is $3,000.
With a standard deviation of 1.7 grams. Assuming the distribution of weights is normally distributed, 4% of whooping crane eggs weigh less than how many grams?
What proportion of children 10 to 15 would be classified as hyperlipidemic (assume that hyperlipidemia is defined as a total cholesterol lelvel of 200)?
For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.
The Skateworld Company operates ice rinks in several major cities throughout the United States. During each session of open skating, one customer is selected at random to receive a free pass for a future open skating session.
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
To test the difference between two means using two mean z test.
Suppose 5.9% of certain population use public transportation to get to work. You randomly select 380 workers and ask them if they use public transportation to get to work.
At alpha = 0.05, is there enough evidence to conclude that proportions vary from those in the study?
Past experience at the Crowder Travel Agency indicated that 44% of those persons who wanted the agency to plan a vacation for them wanted to go to Europe.
Would the method described above be a good way to determine which team was taller (explain why or why not)?
At the .05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%.
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