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The Crystal Window Company makes windows at three locations: Adelaide, Perth, and Cairns. Some windows made by the company contain a visible defect and must be replaced. The Adelaide plant makes 40 precent of all windows while the Perth and Cairns plants split the remaining production evenly. A recent quality study shows that 8 precent of the Adelaide windows contain a defect, 11 precent of the Perth windows contain a defect, while 4 precent of the windows made in Cairns have a defect. Once the windows are made, they are shipped to a central warehouse where they are co-mingled and the location where they were made is lost. Based on this information calculate the probability of a window made by this company being defective.
From the e-activity, discuss whether or not the winning history of the team you selected follows a normal distribution. Provide a rationale to support your response.
What assumption about the population distribution is needed in order to conduct the t test in (a)?
10.3% of students in statistics actually take the course because they want to. If two students are selected at random, find the probability that both took statistics because they wanted to.
Two persons, one inoculated and one not, perform a highly specialized task in a business. Assume that they are not at the same location, are not in contact with the same people, and cannot expose each other to the flu. What is the probability that..
Determine the p-value; and at 95% confidence, test the above hypotheses.
An analysis of variances produces SSbetween treatments = 20 with df between treatments = 2, and SS within treatments = 30 with df within treatments = 15. For this analysis, what is the F-ratio?
it is known that 81 of all new products introduced in grocery stores fail are taken off the market within 2 years. if a
How are the goals of the tests similar and different? How are the tests used? What are the purposes of giving these differing tests?
a fault-tolerant system that processes transactions for a financial services firm uses three separate computers. if the
the amount of time spent watching television or playing video games is considered a significant factor on predicting
Let Z be a standard normal random variable. Use the calculator provided to determine the value of c such that P(-c lesser than or equal to Z lesser than or equal to c)= 0.9534
Find the present value given that interest rates are a constant 6%, vnnpx = 0.4 and Ax(1n) = 0.2. Assuming UDD, find a formula for the present value in terms of end-of-the-year-of-death insurances.
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