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High in the Rocky Mountains, a biology research team has drained a lake to get rid of all fish. After the lake was refilled, they stocked it with an endangered species of Greenback trout. Of the 2000 Greenback trout put into the lake 400 were tagged for later study. An electroshock method is used on individual fish to get a study sample. However, this method is hard on the fish. The research team wants to know the smallest number of fish that must be electroshocked to be at least 70% sure of getting a sample of two or more tagged trout. Please provide the answer. For more studies similar to this one, see A National Symposium on Catch and Release Fishing, Humboldt State University.
Estimate the difference in the proportion of female students taking the biology exam and female students taking the calculus AB exam using a 90% confidence leve
Suppose the boundary conditions are that u(x,y) vanishes on the lines x=0 ,x=3, y=0, and y=2. Derive the corresponding boundary conditions for f and g. Given k^2, show that only certain values of the separation constant lead to non-trivial solution..
Translate each observed frequency into a proportion relative to its row frequency. Do the same for the expected frequencies. Comparing the two
A bond analyst is analyzing interest rates for corresponding municipal bonds issued by two different states. At α = .05, is there a difference in interest rates paid by two states?
A poll estimated that 40% of all voters believed scientists disagree about whether global warming exists had a margin of error of 3% suppose a new group
Find the distribution of the uncertain revenue from the contract in U.S. dollars. Report the mean, the variance, and the standard deviation.
The unit cost of these calculators is $80. The holding cost is $0.70 per calculator remaining at the end of a week. The shortage cost is $2 per calculator of unsatisfied demand at the end of a week. Using a weekly discount factor of α = 0.998, fin..
A chi-square test for goodness of fit is used to test whether or not there are any preferences among 3 brands of cola.
Find the probability of selecting a male and find the probability of selecting a female manager and compute the probability of selecting a male worker given that he is labor.
in a game you pay 2 to play per game. it is possible to win 2 4 or 8 with respective probabilities 75216 20216 1216.a.
A machine that puts corn flakes into boxes is adjusted to put an average of 15 ounces into each box, with standard deviation of 0.23 ounce.
This week we are looking at Probability! There are three different types of probability- The first is Theoretical Probability, which is the probability of what could happen (in theory) based on the options available
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