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What is an example of a variable for which we would use a X^2 test?
The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard deviation of 6. What is the probability that a class of 50 has an average midterm mark that is more than 75?
Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Given 5,000 light bulbs from an outside supplier. If past performance data indicates that these have been 3% defective, and a random sample of 40 parts are drawn from the shipment what is the probability that you will find more than 2 defective pa..
At a 0.05 level of significance, determine if there is a significant difference in the mean weekly units of production for the three types of work schedules (perform all six steps of hypothesis testing and show the ANOVA table).
A campus researcher wanted to investigate the factors that affect visitor travel time in a complex. multilevel building on campus.
on a standard iq test the standard deviation if 15. how many random iq scores must be otained if we want to find the
What kind of probability uses sample spaces to find out numerical probability that event will happen?
If a worker is chosen at random, what is the probability that he or she.Is very improbable to switch jobs. Is somewhat likely or very likely to switch jobs.
The company will replace any printer that fails within 1 year after purchase. What percent of printers can be excpected to fail during the warranty period.
Within what values will 95.44 percent of sample means of this process fall, if samples of n = 14 are taken and the process is in control (random)?
Due to large losses incurred in the past several years, a firm has $2 billion in tax-loss carryforwards. This means that the next $2 billion of the firm's income will be free from corporate income taxes.
the average gas mileage of a gmac runabout is 30.0 miles per gallon. if the gas mileages are normally distributed
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