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[DOC File]FE Exam Review
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A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: A score that is 20 points above the mean. z=2. A score that is 10 points below the mean. z=-1. A score that is 15 points above the mean z=1.5. A …
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[DOC File]MAT 211 - Final
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(b) The area under the curve is dependent upon the mean and standard deviation. (c) Almost all of the data lie within three standard deviations of the mean. (d) Approximately 68% of all of the data lies within one standard deviation of the median. (e) When the data are normalized, the distribution has a mean μ = 0 and standard deviation σ = 1.
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[DOC File]Variance and Standard Deviation Questions
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The standard deviations for both sets of scores are equal. More information is needed to determine the relationship between the standard deviations. 9. From 1984 to 1995, the winning scores for a golf tournament were 276, 279, 279, 277, 278, 278, 280, 282, 285, 272, 279, and 278. Using the standard deviation for the sample, Sx, find the percent ...
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[DOC File]Name:___________________________________
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Ex #1: If thermometers have an average (mean) reading of 0 degrees and a standard deviation of 1 degree for freezing water, and if one thermometer is randomly selected, find the probability that, at the freezing point of water, the reading is less than 1.58 degrees.
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[DOC File]STANDARD DEVIATION
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Find also the standard deviation . Example 4. The probability density function of a continuous random variable x is given by the function . Find its corresponding distribution function, mean, variance and standard deviation, interval of one standard deviation of mean, two standard deviation of mean and three standard deviation of mean.
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[DOC File]CHAPTER 2 REVIEW
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3) Find the . standard deviation. of the binomial random variable. On a 10-question multiple choice test, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the random variable X, the number of correct answers. A) 1.369. B) 1.875 C) 2.045 D) 1.972 E) 1.684. 4 ...
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Standard Deviation Formulas
Find the mean and the standard deviation of the combined set of 25 numbers. 5. The number of members (m) in six scout groups was recorded. The summary statistics for these data are: Σm = 150 Σm2 = 3846. a. Work out the mean number of members in a scout group. b. Work out the standard deviation of the number of members in the scout groups. 6.
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How to find one standard deviation