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Question: Rental income at the Walsh Real Estate Company for the period February-July has been as follows:
(a) Use exponential smoothing with a = 0.2 and 0.4 to forecast August's income. Assume that the initial forecast for February is $78,000.
(b) Which smoothing constant provide a better forecast? Justify your answer.
(c) Determine the optimal value of a that minimizes MAPE.
Make a 99% confidence interval for the percentage of all homeowners in this suburban area who have such problems.
multiple choices based on regression analysis.1. a variable that cannot be measured in terms of how much or how many
A journalist plans to interview an equal number of members of two political parties to compare the proportions in each party who favor a proposal.
Would the correlation be greater, smaller, or about the same if you calculated the correlation between the weights of individual men and their heights (rounded to the nearest inch)? Explain your answer?
The smallest defect in a computer chip will render the entire chip worthless. Therefore, tight quality control measures must be established to monitor the chips.
the mean wage of people living in alto canillas is said to be pound400 a week with a standard deviation of pound100. a
In a medical student review of the study, the student claimed that "treatment with surgery resulted in poorer outcomes than treatment with splinting." Use a 0.10 significance level to test the student's claim.
Marketing and Consumer Behavior A marketing manager obtained random samples of shoppers from three different grocery stores and asked each shopper to name
Normally distributed with the mean income of $30,000 and standard deviation of $3,000. Determine the income which separates top 25% from lower 75% of incomes?
Assume that the two groups come from populations with the same standard deviation. Test the claim that the mean score of women is equal to a mean score of men using a 0.02 significance level.
Suppose that half of the people in the population being tested are just guessing and have no ESP ability, while the other half can actually guess correctly.
(a) If a randomly selected adult is is positive based on the test, what is the probability that the person has the disease? (b) Is this a good diagnostic test?
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