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It has been suggested that an investment portfolio selected randomly by throwing darts at the stock market page of The Wall Street Journal may be a sound (and certainly well-diversified) investment.
Suppose that you own such a portfolio of 16 stocks randomly selected from all stocks listed on the New York Stock Exchange (NYSE).
On a certain day, you hear on the news that the average stock on the NYSE rose 1.5 points.
Assuming that the standard deviation of stock price movements that day was 2 points and assuming stock price movements were normally distributed around their mean of 1.5, what is the probability that the average stock price of your portfolio increased?
The past several years have witnessed a significant engine model-building activity in the automotive industry in a category referred to as "control-oriented" or "control design" models.
a student survey was done to study the relationship between where students live dormitory apartment house co-op or
a) What is the hydronium ion concentration in a solution that has a pH of 7.3? b) Find the pH of a 0.0025 M HCl solution.
What is the temperature of the interior enclosure wall? If the interior surface is maintained at this temperature, but is now polished, what will be the value of the radiant power emitted from the opening?
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim?
The Institute for Operations Research and the Management Sciences
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
What is meant by illusionary correlations? Why is it so difficult for individuals to disprove their beliefs in correlations that are actually false?
Develop and solve a linear optimization model to determine the optimal mix to maximize profit, and write a short memo to the president, Kathy Chung, explaining the sensitivity information in language that she can understand.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
How fast do icicles grow? We have data on the growth of icicles starting at length 10 centimeters (cm) and at length 20 cm. An icicle grows at the same rate, 0.15 cm per minute, starting from either length.
Examine the Levine's test for equality of variance. State the null (Ho) and alternate (Ha) hypotheses for Levine's test. Using the Levine's test results, circle the significance for the test for that hypothesis, and make decision on either rejecting..
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