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[DOC File]Z-Score Practice Worksheet
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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 score that is 30 points below the mean. z=-3. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the raw scores have a mean of 35 and a standard deviation of 6.

[DOCX File]Mathematics Instructional Plan - AFDA
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probability, z-score. Student/Teacher Actions . Time: 90 minutes. ... Find the mean and standard deviation for the number of wins data and z-score for each team. How do the z-scores from that data set compare to the payroll z-scores? Does a team that pays more in salary lead to more wins in a season? Explain your reasoning.

[DOCX File]Kennesaw State University
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Z-scores, Probability, & Hypothesis Testing Worksheet. 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. 20/10 = 2 . A score that is 10 points below the mean. -10/10 = -1. A score that is 15 points above the mean . 15/10 = 1.5

[DOC File]Chapter 1 Notes
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Convert 24,600 mi. to a z-score and use the normal table to determine the required probability. z = (24,600 – 25,000)/200 = -2. P(z < -2) = 0.0228. or 2.28% of the sample means will be less than 24,600 mi. Distribution of Individual Values for 6 Samples from a Population with an Exponential Distribution. Distribution of the Means of 30 Samples

[DOC File]AP Statistics Review – Probability
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Hint: Find the z-score for each test. Example 13: A machine that puts the center holes in blank CDs operates in such a way that the distribution of the diameter of the holes may be approximated by a normal distribution with a mean of 1.5 cm and a standard deviation of .1 cm.

[DOC File]The Mathematics of Value-at-Risk
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Z = with expected value 0 and variance 1. The probability density function of the standard normal is f(z)= = . A result of the above is that solving P[aXb] is the same as solving P[Z]. This process of converting a and b can be thought as a “standardization.” is the Z-Score. for a, and is the . Z-Score. for b.

[DOCX File]Humble Independent School District / Homepage
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The z-score for $350 thousand is (350 – 260.8)/145.6 = 0.61, which is 0.61 standard deviations above the mean house price. (b) $220 thousand—the median is the best measure of the center of a skewed distribution.

[DOCX File]Minnesota State University Moorhead
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Probability of A = # outcomes classified as A/total # possible outcomes. ... Must first determine the z-score that corresponds to the proportion given. For example, suppose you have a score of x = 43 on an exam. You know that exactly 60% of the class had scores of 43 or lower. Then your score x = 43 has a percentile rank of _____ and the score ...

[DOC File]Z-Score Practice Worksheet
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For a normal distribution, find the z-score that separates the distribution as follows: Separate the highest 30% from the rest of the distribution. . Separate the lowest 40% from the rest of the distribution. Separate the highest 75% from the rest of the distribution. For the numbers below, find the area between the mean and the z-score: z = 1.17

[DOC File]Topic 6: Standard Scores
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For a +Z score, the table gives you Start here on 9/22/15. 1. The percentage of scores in the normal distribution below that +Z. 2. The percentage of scores between 0 (the mean) and that +Z. 3. The percentage of scores above that +Z, called the tail percentage. For a –Z score (a negative Z), the table gives you . . . 1.

[DOC File]Probability and One-sample Z tests
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A score of 65 is a z-score of 1.25 2. A z-score of 1.25 is at the 89.44 percentile level leaving a 10.56% chance of selecting 1 person at random whose score is 65 or greater.

[DOCX File]2A.11c Just in Time Quick Check
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Potential teaching strategies could include asking students to explain in context what a z-score represents and practice using the Standard Normal Distribution table. Teachers could also point out situations where the z-score is out of the possible range of probability values.

[DOC File]Exam 3 Practice Questions
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B Use the sampling distribution of the sample proportion that you used above and the z-score. Look up 1.00 in the table. 0.8413 is listed in the table. This is the proportion less than, we want the proportion greater than so we take 1-0.8413=0.1587.

Probability of z score