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A system consists of two branches in parallel, each branch having two components. The probabilities of successful operation of components A, B, C, and D are 0.9, 0.8, 0.7, and 0.6, as shown above. If a component fails, the output from its branch is zero. If only one branch operates, the output is 50%. Of course, if both branches operate, the output is 100%.
Amabo lost, getting only 46% of the vote. Do you think the station s faulty prediction is more likely to be a result of bias or sampling error? Explain.
Suppose that someone sampled 100 Palm trees of the same species. Note: Most trees would be similar in height, but a few would be a little shorter and a few would be a little taller. They recorded the height for each tree. What shape would you exp..
This exercise presents a real example of Simpson's paradox (Wagner, 1982). The total income and total taxes paid in each of five income categories.
Some students think that a 90% confidence interval contains 90% of the data. Use the list of data given (the heights of women)
The sales of Lexus automobiles in the Detroit area follow a Poisson distribution with a mean of 3 per day. What is the probability that for five consecutive days at least one Lexus is sold?
Let pC be the true proportion of Champaign voters who support marijuana legalization and let pU be the true proportion of Urbana voters who support marijuana legalization. (a) Calculate the p-value for the test H0: pU=pC versus H1: pU≠pC.
In the linear programming formulation of the transportation problem, cost of transporting one unit of the material from a supply point to a demand point appears in
Stress levels were recorded during a true answer and a false answer given by each of six people in a study of lie detecting equipment.
Explain the difference in these two probabilities, using the distinction between relative frequency probability and personal probability in your explanation.
"Differentiation of Terminal Latewood Tracheids in Silver Fir Trees During Autumn," published online in the Annals of Botany in March 2005
Suggest several lurking variables that also contribute. (Ask yourself what kinds of people tend to get more education.)
What can teachers do to alleviate statistics anxiety in their students? To explore this question, statistics anxiety for students in two classes was compared. In one class, the instructor lectured in a formal manner
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