Standard deviation from probability
[DOC File]Columbia University in the City of New York
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Probability Economic Scenario DJIA Fund Growth Stock 0.2 Recession -$100 -$200 0.5 Stable Economy +$100 +$50 0.3 Expanding Economy +$250 +$350 Calculate the expected value and standard deviation for the dollar return per $1000 invested for each of the two investments.
[DOC File]Quiz #1 e.edu
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Again, the sampling distribution of the sample mean is normal with a mean 117 cm and a standard deviation . What is the chance of getting a sample mean exceeding 120 cm? The z score of 120 cm, with respect to this normal distribution, is . Use the normal curve table and find the probability to be 0.9980.
[DOC File]ASSIGNMENT Chapter 5
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The mean and standard deviation of the startle responses were 37.9 and 12.4,respectively. Assume that the startle response x for a person with the specified blood alcohol level is approximately normally distributed. a. Find the probability that x is between 40 and 50 milliseconds. b. Find the probability that x is less than 30 milliseconds. c.
[DOC File]Z-Score Practice Worksheet
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What is the probability of getting a raw score between 41 and 44? 9%. ... Women’s heights have a mean of 63.6 in. and a standard deviation of 2.5 inches. Find the z score corresponding to a woman with a height of 70 inches and determine whether the height is unusual. Z = (70 – 63.6)/2.5 = 2.56 ...
[DOC File]Commonly Used @Risk Functions
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(mean,standard deviation) lognormal distribution with specified mean and standard deviation RiskNegbin (s,p) negative binomial distribution with s successes and p probability of success on each trial * RiskNormal (mean,standard deviation) normal distribution with given mean and standard deviation RiskPareto (theta,a) pareto distribution * RiskPert
[DOC File]AP Statistics
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Determine the standard deviation of 3Y + 5.44 3.62 0 5.1 5.44 8. Determine the standard deviation of 4X - 5Y. 15.38 –2.76. 11.05 10.62 cannot be determined from the given information. 9. The amount of pollutants a factory dumps into a river is approximately normally distributed with a mean of 2.43 and a standard deviation of 0.88 tons.
[DOC File]00 PSY221 title and cover page - Fayetteville State University
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a. the new standard deviation and the old standard deviation will be the same. b. the new standard deviation will be twice as large as the old standard deviation. c. the new standard deviation will half the size (twice as small) as the old standard deviation. d. not enough information to answer this question. Two samples are as follows. Sample ...
Chapter 7
1. With a continuous probability distribution,: a. a probability is assigned to each possible outcome. b. possible outcomes are constantly changing. c. an infinite number of possible outcomes exist. d. there is no variance. Ans: c. Difficulty: Moderate. Ref: Dealing With Uncertainty. 2. The expected value is the: inverse of the standard deviation
[DOC File]Exam 3 Practice Questions
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b) the standard deviation of the sample mean is the same as the standard deviation from the original population c) the mean of the sampling distribution of is the population mean. d) always has a Normal distribution. 7. Which of the following is true about p-values? a) a p-value must be between 0 and 1.
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