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Before 1918, approximately 54% of the wolves in the New Mexico and Arizona region were male, and 46% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 67% of wolves in the region are male, and 33% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced.
(a) Before 1918, in a random sample of 11 wolves spotted in the region, what is the probability that 8 or more were male? What is the probability that 8 or more were female? What is the probability that fewer than 5 were female? (Use 4 decimal places.)
Solution throughout graphical method. Produced by a company linear programming model is used to describe the production schedule.
A scientist examined the effect of temperature and catalyst on the yield of a reaction. He ran the experiment at both 150° and 200°C with two types of catalyst.
This sample is 500 so the distribution of the sample means will be normal, no matter what the shape of the actual distribution of dollar losses.
Based on this information, if department employee selects random sample of n = 9 containers, determine probability that mean volume for sample will be greater than 1.01 gallons?
A sample of 25 provided a sample mean of 14 and a sample standard deviation of 4.32. What is the value of "t" for this sample? For a 95% confidence level, what is the critical value of "t"?
Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
If its weekly cost function is C(x)=68,000+150x, how should the manufacturer set the size of the rebate in order to maximize its profit?
Compute the value of the sample correlation coefficient between weekly sales and shelf space. Is the correlation between weekly sales and shelf space significant at the .01 level of significance? What is the estimated regression equation?
Use simple exponential smoothing with α = 0.3 to forecast battery sales for February through May. Assume that the forecast for January was for 22 batteries.
A breakdown of the responses is shown in the accompanying table. Is there evidence at the 10% level to infer that the responses differ among the three groups of employees?
The manufacturer of an airport baggage scanning machine claims it can handle an average of 530 bags per hour.
Define mixed method research and describe its strengths. Provide an example of when it is appropriate to apply mixed method research in the human services field. Summarize how scientifically sound research supports the function of a human services..
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