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Before 1918, approximately 58% of the wolves in the New Mexico and Arizona region were male, and 42% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 69% of wolves in the region are male, and 31% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to four decimal places.)(a) Before 1918, in a random sample of 13 wolves spotted in the region, what is the probability that 10 or more were male?
What is the probability that 10 or more were female?
What is the probability that fewer than 7 were female?
(b) For the period from 1918 to the present, in a random sample of 13 wolves spotted in the region, what is the probability that 10 or more were male?
A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance:
What is the probability that the person will be hospitalized for a drug-related problem, given that the person has received the PMI sheet?
The manufacturer of a nationally known "lite beer" claims that the approval rating for it's product is at least 85%. A local soft drink manufacturer has retained a marketing agency to test the "lite beer".
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
If you draw two balls without replacing the first one, what is the possibility that one ball is red and the other is white.
Find the z score corresponding to a score of X = 60 for each of the following distributions:
What would be your recommendation to the local Farm Bureau for estimating the average loss of production per acre, given the data you have at hand?
A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.
Two models of a product - Regular (X) and Deluxe (Y) - are produced by a company. A linear programming model is used to determine the production schedule.
Suppose your company decided purchase 12 shrimp boats (Jenny 1 - Jenny 12). These boats are a fixed resource for the firm. What is the short run total cost of producing 60 tons of shrimp?
A random variable has a standard deviation of 16, and an unknown mean. Find the lowest size of a simple random sample so that the sample mean estimates the population mean with a standard error no larger than 0.25.
Derive an expression for the closed loop transfer function: Because the output is related to the actuating signal by G(s), we have
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