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A high school guidance counselor has examined the 60 colleges and universities that are on her "highly recommended" list for her school's graduating seniors. The data she has collected on each college or university include highest degree level offered (1 5 bachelor's, 2 5 master's, 3 5 doctorate), primary support for the school (1 5 public, 2 5 private), type of campus setting (1 5 urban, 2 5 suburban, 3 5 rural), and annual cost for tuition and fees (dollars). The data are in file XR02051.
a. Construct a simple tabulation in which the counts are according to the highest degree level offered.
b. Construct a cross-tabulation describing the schools, using the highest degree level offered and whether the school is public or private as the categorization variables.
c. Construct a display showing the average value for tuition and fees according to highest degree level offered and whether the school is public or private. Do the categorization variables seem to be related to the level of tuition and fees? If so, how?
Construct a 95 percent confidence interval for the population proportion of positive drug tests. Why is the normality assumption not a problem, despite the very small value of p?
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What is the difference between common causes of variation and special causes of variation?
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let y1 and y2 be independent poisson random variables with means ?1 and ?2 respectively.find thea. probability function
an investor estimates that there is a 75 chance that a particular mutual funds price will increase to 100 per share
D. The Sunbeam Corporation makes a wide variety of appliances for the home. One product is a digital blood pressure gauge. For obvious reasons, the blood pressure readings made by the monitor need to be accurate.
in a research report on the effect of moisture on a certain kind of composite material it is reported that in 80 of
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