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The T-shirt Factory purchased 12 futures contracts on cotton at a quoted price of 55.50 as a hedge against its inventory needs. At the time it actually needed the cotton, the spot price was 56.1. Cotton futures are based on 50,000 pounds and quoted in cents per pound. How much did the Shirt Factory save by hedging cotton?
A doctor wants to estimate the HDL. How many subjects are needed to estimate the HDL within 3 points with a 99% confidence. Assuming s=13.9
Two cards are drawn successively and without replacement from an ordinary deck of playing cards. Compute the probability of drawing-- A heart on the first draw, a club on the second draw.
A person is regarded as having high cholesterol if Z > 2.0 and borderline cholesterol if 1.5
Construct a 95% Confidence interval for diffrence between the two populations. At the alpha equals .10 level of significance, can the firm conclude that Chicago households buy more online than Milwaukee.
Question: Describe a normal distribution of a variable. Where in nature can you find a normal distribution?
The firm's best assessment is a .3 probability of strong demand. the expected value of perfect information about demand is?
Consider the problem of finding a shortest (forward) path in a graph with given arc lengths, subject to the constraint that the path passes through every node exactly once (the choice of start and end nodes of the path is subject to optimization).
Find the sampling plan if the producer's stipulation is to be satisfied exactly. Find the average sample number for lots that are 1.8% nonconforming.
researchers at the university of california-berkeley have designed built and tested a switched-capacitor circuit for
What is the critical value for 5% of the area under the chi-square probability density for a random variable that has 5 degrees of freedom?
1. You are moving to a country where malaria is endemic. From past experience you know that you don't feel well when taking anti-malarials and would like to avoid them. You want to know how much more risk you would be incurring by not using ..
Using (and explaining) your own estimate for the population standard deviation, determine the number of trucks on which the company should install the hidden speed-recording device.
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