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An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1 year of the population mean. Assume the population of ages is normally distributed. Determine the minimum required sample size to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 1.2 years.
What are the minimum and maximum heights it should use as a basis for its design?
consider the experiments first draw a poisson random variable n with parameter ?. then perform n independent bernoulli
A game company that manufactures a dart game that dispenses tickets has been asked to put a business plan together for a customer who wishes to buy the game.
according to data from the environmental protection agency the average daily water consumption for a household of four
Using numerical and graphical summaries, describe the distribution of each of these variables.- Using numerical and graphical summaries, describe the relationship between each pair of variables in this set.
one thousand people are enrolled in a 10-year cohort study. at the start of the study 100 have diagnosed cvd. over the
Prepare a report (see below) with your ranking of the judges based on the probabilities and conditional probabilities as well as the analysis of each court.
Find the probability that a sample of 16 tires will have an average tire life of more than 52000 miles, give that the mean tire life is 50000miles and the standard Deviation is 8489.13.
A lot of 20 typewriters contains four defectives. 5 typewriters are randomly selected, what is the probability that at least two of the typewriters are defectiv
How does sample size affect the interpretation of survey results?- Distinguish between probability and nonprobability sampling techniques. What are the implications of each?
the table below contains profit projections for various decisions to be made by the university. the associated
Which is relatively better: a score of 81 on a psychology test or a score of 56 on an economics test? Scores on the psychology test have a mean of 87 and a standard deviation of 9.
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