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The 92 million of Americans of age 50 and over control 50 percent of all discretionary income (AARP Bulletin, March 2008). AARP estimated that the average annual expenditure on restaurants and carryout food was $1873 for individuals in this age group. Suppose this estimate is based on a sample of 80 persons and that the sample standard deviation is $550. What is the 95% confidence interval for the population mean amount spent on restaurants and carryout food?
For the following, describe the target population, sampling frame, sampling unit and observation unit. Is there any selection bias or inaccuracy of responses?
Then estimate demand again with a weighted moving average in which sales in the most recent year are given a weight of 2 and sales in the other two years are each given a weight of 1.
the p-value for testing the hypoteheses h0 u 30 versus ha u gt 30 is 0.032.what is the p-value if the alternative is
Find the value of x. (Give your answers correct to one decimal place.) Find the value of x that corresponds to each of these standard scores z = -1.26.
What does this theorem allow you to do that traditional statistics do not? What are some prerequisites for using Bayesian statistics?
In regards to the statistics paper you helped me with. Can you do a conclusion of the findings. I can edit it to my communication style, but I do need to do the following:
Calculate for Alpha, Beta, and the Effect size?
a 6-faced die is rolled two times. let a be the event that the outcome of the first roll is greater than 4. let b be
the pulse rates for 13 adult women were as follows. construct a 0.95 confidence interval for the mean pulse rate. give
what type of data would necessitate using a hypothesis test of the population proportion rather than a test of the
a new muscle relaxant is available. researchers from the firm developing the relaxant have done studies that indicate
the shape of the distribution of the time required to get an oil change at a 10-minute oil-change facility is unknown.
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