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Assume that the probability of failure of a ball bearing at any revolution is constant and equal to p. What is the probability that the ball bearing will fail on or before the nth revolution? If p = 10-4, how many revolutions will be reached before 10 % of such ball bearings fail? More precisely, find K so that P[X > K] ≤ 0.1, where X is the number of revolutions to failure.
An educational software company wants to compare the effectiveness of its computer animation for teaching creative writing with that of a textbook presentation.
The average number of acres burned by forest and range fires in a large Wyoming county is 4,300 acres per year, with a standard deviation of 750 acres. The distribution of the number of acres burned is normal.
Find the probability that on a given shift: (1) Exactly 2 workers will be absent; (2) More than 4 workers will be absent. [Given that e to the power of -3 is equal to 0.04979]
Describe fundamental and relative valuation method. Include an explanation of the stage type model used. And any significant assumption needed?
Conduct a survey and prepare a report on Short term Investment options.
What are your overall conclusions concerning the effects of nonblink time period on change in TBUT?
on a test of motor coordination the population of average bowlers has a mean score of 24 with a standard deviation of
What are the null and alternative hypotheses to test if the new battery has longer life than the old battery? Draw a conclusion for the hypothesis test. Make sure you state your conclusion in the context of the problem.
Determine the proportion of variation in grade that can be explained by the linear correlation between the grade and the number of credit hours earned at the same time of taking the course.
Two binomial population proportions are suspected to be approximately 0.3, but they are unknown precisely. Using these as initial estimates, it is desired to conduct a study to determine the difference between these two population proportions.
you notice in your introductory psychology class that more women tend to sit up front and more men sit in the back.
Write the regression equation for the above information. Interpret the meaning of the coefficients of X1, X2 and X3. Compute the coefficient of determination and interpret its meaning
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