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Show that under the assumption of small percentage tolerances there is a simple formula for the approximate percentage tolerance of the product of two intervals in terms of the tolerances of the factors. You may simplify the problem by assuming that all numbers are positive. After considerable work, Alyssa P. Hacker delivers her finished system. Several years later, after she has forgotten all about it, she gets a frenzied call from an irate user, Lem E. Tweakit. It seems that Lem has noticed that the formula for parallel resistors can be written in two algebraically
He has written the following two programs, each of which computes the parallel-resistors formula differently:
Lem complains that Alyssa's program gives different answers for the two ways of computing. This is a serious complaint.
1. students take an average of 45 minutes and standard deviation of 8 minutes to complete a certain statistics test. if
Suppose that, in a particular city, airport A handles 50% of all airline traffic, and airports B and C handle 30% and 20%, respectively. The detection rates for weapons at the three airports are .9, .5, and .4, respectively. If a passenger at one ..
In the researcher's sample of 1,500 children, the sample proportion of children was 0.0721. Compute the z-statistic of this sample proportion
Variations of the Monty Hall problem - find out in advance which door has the car behind it. In the spirit of "the show must go on," he makes a guess at which of the two doors to open and gets lucky, opening a door behind which stands a goat. Now ..
Assuming that = 119.5 ng.ml, test the claim that the mean cotinine level of all smokers is equal to 200.0 ng/ml. Use a 0.05 significance level.
If a table of expected frequencies differs very little from the frequencies that were observed, would the cal- culated chi-square be large or small? Why?
alice has a ten-day vacation from school and she wants to spend some of it reading. beside her favorite comfy chair
7 squirrels were found to have an average weight of 9.4 ounces with a sample standard deviation is 0.9. find the 95
To determine whether a metal lathe that produces machine bearing is properly adjusted, a random sample of 36 bearings is collected and the diameter of each is measured.
There are twelve months. Given the cohort of 100 which starts the program, about how many are left after twelve months?
In a market study for Target, a researcher found that 70% of customers are repeat customers. If 14 customers are selected at random, find the probability of getting.
Statistician has a data set containing n1 = 7 values of a random variable X and n2 = 6values of a random variable Y . She is interested in using the run test to test the equality ofthe distribution functions.
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