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For each of the following three populations, indicate what the sampling distribution for samples of 25 would consist of:
a) Travel expense vouchers for a university in an academic year.b) Absentee records (days absent per year) in 2009 for employees of a large manufacturing company.c) Yearly sales (in gallons) of unleaded gasoline at service stations located in a particular state
Bay area community college (BACC) has collected data comparing the starting salaries of their graduating students with last names beginning with the letters A through M with those whose last names begin with N through Z.
The only possible, mutually exclusive outcomes of the surgery are death, relief of symptoms, (angina, dyspnea), or continuation of symptoms. The probability of death is 0.02 and the relief of symptoms is 0.80. What is the probability that the pati..
The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status. What is the Population.
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
Assuming that the standard deviation is known to be 121.8Ib use 0.05 significance level to test the claim that the population mean of all such bear weights is greater than 150 Ib
The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish three days next week. Define the random variable x to be the number of day Pete catches fish. (hint. binomial distribution)
Suppose you, as the manager of Tennessee Grilled Pork. would like to ensure you have enough cleaning staff for your dining room and would like to analyze data for customers who enter the restaurant to place and order and either eat in the restaura..
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired. In addition, 35 employees will leave the firm within 5 years.
A sample of 100 mortgages approved during the current year showed that 31 were issued to a single-earner family or individual. The historical average is 25 percent.
Assume we interested in relationship between the age of individual, as measured by visits. Suppose after selecting 15 members the observation:
A basketball player makes 80% of his free throws. If he attempts eight free throws during the next game, what is the probability that he will make more than his average?
Does the data prove a significant difference in mean times?
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