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The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2,640.00. Assume the standard deviation is $500.00. A real estate firm samples 100 apartments. What is the probability that the average rent of the sample is more than $2,686?
The sample mean to be calculated from a random sample of size n = 4 from a population consists of the eight measurements (2, 6, 9, 12, 25, 29, 39, 50). Find the sampling distribution of y-. (Hint: There are 70 samples of size 4 when sampling f..
Which of the given properties doesn't apply to theoretical normal distribution?
question for the population of all u.s college students the gpa is approximately normally distributed with a mean of
A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.
Telephone interviews were conducted on a representative sample of 1,003 adults living in the United States. For this sample, 506 adults admitted that they have paid to download music
What is the appropriate procedure to test for a significant in different means between the 2 age groups. What is the p-value corresponding to your this answer and compute a 95% CI for the difference in means between the two groups.
The manger plugs their data into excel and without plotting comes up with the equation for the regression line. Using this equation they estimate the produce sales for the upcoming year. What mistakes did they make? Explain.
To obtain data, the obituary columns of the New York Times are read for 30 days, and the ages at death of people in the United States are noted. Do you think this approach will lead to a representative sample?
an inspector inspects large truckloads of potatoes to determine the proportion p in the shipment with major defects
a friend of mine is giving a dinner party. his current wine supply includes 9 bottles of zinfandel 10 of merlot and 11
In a random sample of 70 bolts with a sample mean length of 1.25 inches and a standard deviation of .01 inches. What is the CI?
What is the probability Alice gets done first? What is the expected amount of time until Alice and Betty are both done?
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