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Percentile: We show two methods for calculating a percentile:
Calcium levels in people are normally distributed with a mean of 9.4 mg/dL and a standard deviation of .3 mg/dL.
Student A and B took different statistics classes and 2 different finals. Student A had a score of 83 out of 100 and ranked 72 in his class.
The weights (in pounds) of preschool children are:
In 2008, there were 628 rock and roll stations in the U.S. If one station finds that 128 stations have a larger daily audience
A social psychologist has developed a test measure gregariousness. The test is normed so that it has a mean of 70 and a standard deviation of 20
What is the second decile and the eighth decile?
Misery loves company. It is time for the PE (professional engineer's exam). The results of the national test were normally distributed around the mean score
Assume that body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62°F - based on data
The distribution represents the data for weights of fifth grade boys. Find the approximate weighs corresponding to each percentile
Net sales in the first year (in hundreds of thousands of dollars) is uniformly distributed between 6 and 12.
Erin Jones has $100,000 and, to diversify, she wants to invest equal amounts of $50,000 each in two mutual funds selected from a list
A student took two exams and achieved the 7th highest grade on each of them. Forty three students took one of the tests(Math) and 197 students
Coefficient of Variation and Standard Deviation are two measures of dispersion or spread among the data values.
A manufacturer of digital audiotape players surveyed 100 retail stores in each of his sales regions. An analyst noticed that in the SouthAtlantic region
Compute the coefficient of variation of each fund. If s represents risks and the x(mean) represents expected return
A project's cash flows have a beta of 1.2, a standard deviation of $200, and a coefficient of variation of 0.40. What is the expected cash flow?
Treynor Pie Co. is a food company specializing in high-calorie snack foods. It is seeking to diversify its food business and lower its risks.
Al Bundy is evaluating a new advertising program that could increase shoe sales. Possible outcomes and probabilities of the outcomes are shown below.
Shao Industries is considering a proposed project for its capital budget. The company estimates that the project's NPV is $12 million.
Two stocks with actual returns as follows are being considered by me as an investor. Assist me by calculating the standard deviation
Monarck King Size Beds, Inc., is evaluating a new promotional campaign that could increase sales. Possible outcomes and probabilities of the outcomes
The spread in the annual prices of stocks selling for under $10 and the spread in prices of those selling for over $60are to be compared.
Five investment alternatives have the attached returns and standard deviations of returns. Using the coefficient of variation, rank the five alternatives
Assume that you are the Quality Manager for the Emerson D. Meritz Machine Tool Company. Your model IE566 grinding machine is afflicted by three types