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Question: The 92 million 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.
a. At 95% confidence. what is the margin of error?
b. What is the 95% confidence interval for the population mean amount spent on restaurants and carryout food?
c. What is your estimate of the total amount spent by Americans of age 50 and over on restaurants and carryout food?
d. If the amount spent on restaurants and carryout food is skewed to the right, would you expect the median amount spent to be greater or less than $1873?
Refer to the EAI sampling problem. Suppose a simple random sample of 60 managers is used.
a. Calculate the sample average b. Calculate the sample standard deviation c. Based only on this information do you have a normally distributed process?
AAMS3663 Mathematics for Games Technology Assignment. Particle A is located at the Origin, while particle B is located 10 units due north of A. B is moving with velocity vB = 2i - 5j. If A move with velocity vA = 4i + j, what is the shortest distance..
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Which approach toward data is more aligned with qualitative research?
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