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To estimate the proportion of unemployedworkers in Panama, an economist selected at random 400 persons from the working class. Of these, 25 were unemployed.
a. Estimate the true proportion of unemployed workers and place bounds on the error of estimation.
b. How many persons must be sampled to reduce the bound on the error of estimation to .02?
A survey indicates that male employees were more likely than females to relocate without being promoted. What information would you want to know before you accepted the results of this survey?
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Hypothesis test for the difference between two means - Assume the population standard deviations are not the same. At the 0.05 significance level, is there a difference in the mean waiting time?
30 students are female what would her confidence interval be if she requires the confidence level of 80%? Determine the point estimate (p) for percentage of engineering students that are female?
Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage. Let x be a random variable that represents the number of milligrams of porphyrin per deciliter of blood.
Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is randomly selected, what is the probability that the test results is a false positive? Who would suffer from a false positive result? Why?
a biologist has found that 40 of all brown bears are infected with trichinosis. 10 brown bears are tested for
companies that do business over the internet can often obtain probability information about web site visitors from
in a 300 words documents minimum outline how to use the process evaluation method to increase the knowledge of signs
Standard deviation of $1,500. From a sample of 64 graduates, what is the probability that the mean starting salary is between $41,000 and $42,500?
Meal costs. A company is interested in estimating the costs of lunch in their cafeteria. After surveying employees, the staff calculated that a 95% confidence interval for the mean amount of money spent for lunch over a period of six months is ($7..
Determine the probability that a butterfly is infected, given that it was tagged in both places. Enter an answer between 0 and 1, rounded to 2 decimal places, e.g. 0.31.
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