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How can graphics and/or statistics be used to misrepresent data? Where have you seen this done?
Suppose that at a blood drive a total of n = 300 participants donate blood, and the blood type for each donor is recorded. A "universal" donor is one who has a blood type of O negative. Though their goal was to have at least 30 universal donors duri..
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclusion would you reach? The sales are as f..
What statistical method can you apply using this data?
We are evaluating the sheet metal scrap rate in a contractor proposal. Based on a sample of 28 parts you calculate a mean rate of 6.50% (treat as 6.50) and a standard deviation of 1.20. Calculate a 80% confidence interval to be used to support negoti..
Most of us love Luzon mangoes, but hate buying those that are picked too?early. Unfortunately, by waiting until the mangos are almost ripe to pick carries a risk of having 15% of the picked rot upon arrival at the packing facility.
Of the 300 past sites that were drilled and produced much oil, 3 gave a low reading. Calculate the posterior probabilities of no, some, and much oil, given a low reading.
Use the information in the table to determine the percentages for each interval. Do the data below show a linear relation, non-linear relation, or no relation at all
A traffic engineer is studying a stretch of road on a rural highway. At his observation point, an average of 12 vehicles per hour pass. The vehicles are independent of each other. 1. What is the probability that fewer than 5 vehicles pass betwee..
The post office has established a record in a major Midwestern city for delivering 90% of its local mail the next working day. If you mail the eight local letters, what is the probability that all of them will be delivered the next day? Of the eight,..
If you purchase (randomly select) a Starbird 300 and your car gets 27 mpg in city driving, what do you think of United Motors' claim? Explain your answer.
The ages (in years) of the employees at a particular computer store are 36, 32, 22, 32, 33 . Assuming that these ages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal plac..
The actual amount of icing sugar that a filling machine puts into "180 gram" jars is well modeled as a normally distributed random variable with σ = 1.88 gram. If it is desired that only 1.2% (i.e. 0.012) of these jars are to contain less than 180.00..
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