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Day trading again
An option to buy a stock is priced at $200. If the stock closes above 30 on May 15, the option will be worth $1000. If it closes below 20, the option will be worth nothing, and if it closes between 20 and 30 (inclusively), the option will be worth $200. A trader thinks there is a 50% chance that the stock will close in the 20 30 range, a 20% chance that it will close above 30, and a 30% chance that it will fall below 20 on May 15.
a) Should she buy the stock option?
b) How much does she expect to gain?
c) What is the standard deviation of her gain?
A random sample of 100 doctors results in 83 who indicate that they recommend brand A. The value of the test statistic z in this problem is approximately?
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis?
1. a study of commuting times reports the travel times to work of a random sample of 17 employed adults in new york
A Geiger counter used in a spent nuclear fuel area records on the average of 40 counts per min. Determine the probability that there will be 2 counts in a 6-sec period.
A student randomly guesses on all 25 questions of a true-false test. Use the normal approximation to the binomial to approximate Pr[ ], that is, that the student gets 10 or fewer questions correct.
A government official estimates that the mean time required to fill out the long form of the United States Census follows a distribution which is approximately normal with mean 36 minutes. A random sample of 16 people who were given the long form ..
1 from a high school with 40 freshman 38 sophmore 35 juniors and 30 seniors a random sample of 8 students is taken
Federal Reserve Board regulations permit banks to offer their clients commercial paper. - Can you conclude that Bank of America has a greater share of the new market for commercial paper? Explain.
Find a 90% confidence interval for the mean September weight of all chipmunks in Rocky Mountain National Park
(a) How could an LR parser be modified to produce a leftmost parse as LL(1) parsers do? Describe your answer in terms of the algorithm in Figure 6.3.
What types of sources of capital can be employed in a transaction? Pick a single source of capital and describe why/under what circumstance you would use this type source.
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