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A random sampling of financial analysts was asked to provide forecasts of earnings per share of a corporation's stock for the next year. The results are summarized as follows:
Forecast ($ per share) # Analysts Mi FiMi
$8 < $10 2 Analysts
$10 < $12 3 Analysts
$12 < $14 9 Analysts
$14 < $16 16 Analysts
$16 < $18 4 Analysts
Find the mean earnings per share for this stock, while also filling in the chart for Mi and FiMi.
Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?
Prepare an analysis of your survey. Determine if you have used the appropriate measures to research your business problem, and identify the level of measurement being used for each of your survey questions.
What percent of the sales representatives earn more than $42,000 per year? What percent of the sales representatives earn between $32,000 and $42,000?
Using What's Best! (Or solver) find the least-cost matrix.
Find out a 95 percent confidence interval for population mean.
What is the probability that the device will detect at least one of the two shoppers entering together?
Test the manager's claim at 5% and 1% significance level tests.
To compute all the descriptive statistics for the following set of three test scores over the course of a semester. Which test had the highest average score? Which test had the smallest amount of variability?
In a hospital, a sample of 8 weeks was selected, and it was found that an average of 438 patients was treated in the emergency room each week. The standard deviation was 16. Find the 99% confidence interval of the true mean. Assume the variable is..
Use a significance level of alpha = .05 to test the claim that p > .5. The sample is a simple random sample n = 50. Show how to calculate beta for the test and assume the true population proportion is .6.
Determining probability when guessing answers. Test comprise of multiple- choice questions each having 4 possible answers (a, b, c, d) one of which is right. Suppose that you guess answers to six such questions.
As part of a long-term study of individuals 65 years of age or older, sociologists and physicians at the Wentworth Medical Center in upstate New York conducted a study to investigate the relationship between geographic location and depression.
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