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In a capture- recapture survey, 10,000 salmon were released after marking by inserting small wires. When 6000 fish from the population were subsequently caught, 400 of the wire tags were discovered by running the fish through a metal detection device.
(a) Estimate the number of fish in the population
(b) Give an approximate 95% confidence interval for the estimate.
(c) Suppose that the detection device missed some of the wire tags. Would overestimation or underestimation of the population tend to result?
(d) If the wire tags caused significant numbers of fish to die soon after release, would overestimation or underestimation tend to result?
A single plant operates three galvanizing lines that are assumed to operate independently. What is the probability that none of the lines experiences a surface finish problem in 40 hours of operation.
What is the probability that a waitress will refuse to serve alcoholic beverages to only 2 minors if she randomly checks the IDs of 5 students from among 9 students of which 4 arc not of legal age?
What are the minimum and maximum heights it should use as a basis for its design?
1. Let X1,..., Xn be a random sample from a normal population. A particular realization resulted in a sample mean of 20 with the sample standard deviation 4. Construct a 95% con?dence interval for μ when:
Decision analysis can be used on itself! What do you want to accomplish in studying decision analysis? Why is decision analysis important to you? In short, what are your fun damental objectives in studying decision analysis?
Refer to Exercise 6.26 (page 371). In addition to the computer computing mpg, the driver also recorded the mpg by dividing the miles driven by the number of gallons at each ?ll-up.
you have just been hired by an auto manufacturer. management wants to know if cars are younger today versus 1995.
a) What's the mean difference in weights of the melons? b) What's the standard deviation of the difference in weights?
16. What are some capacity measures for each of the following? a. University
The length of country and western songs is normally distributed and has a mean of of 170 seconds with a standard deviation of 49 seconds. find the probabality that a random collection of 16 songs will have a mean of 158.30 seconds or less?
Precisely (i.e., using specific numbers) what does central limit theorem tell us about sampling distribution of sample means for samples of this size from this population?
1. What is the current status of the housing stock in the county?
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