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Among Towson students 70% own a car, 50% own a bike, and 40% own both
a. Draw a venn diagram to illustrate thisb. Find a probability that a randomly chosen student owns atleast one of the above vehiclesc. What is the probability that a randomly chosen student does not own a bike.
Income Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana.
Find the probability that there are enough seats for all the passengers who show up. How many passengers are expected to show up?
The lapping process, which is used to grind certain silicon wafers to the proper thickness, is acceptable only if 'sigma', the population standard deviation of the thickness of dice cut from the wafers, is at most 0.50 mil.
Explain how one extreme score influences mean and standard deviation.
The times for 300 college students of introductory statistics to complete a one-hour times exam.
Suppose that it is important to demonstrate that the wall thickness exceeds 4.0 mm. Test appropriate hypotheses using these data. Draw conclusions at α= 0.05.
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
Not take SRS of 25 students who took test. What are the mean and standard deviation of sample mean score xbar of these 25 students?
A psychologist interested in political behavior measured the square footage of the desks in the official office of four U.S. governors and of four chief executive officers (CEOs) of major U.S. corporations.
A pie chart shows the market shares of cola products. The "slice" for Pepsi-Cola has a central angle of 90 degrees. What is its market share.
Suppose it is desired to estimate the population mean number of miles with a margin of error of ± 2 miles at 95% confidence. Do the data provide this desired level of precision? What action, if any, would you recommend be taken?
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
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