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[DOC File]Z-Score Practice Worksheet
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For the z-scores below, find the percentile rank (percent of individuals scoring below): -0.47 2.24 For the numbers below, find the percent of cases falling above the z-score: 0.24 -2.07 A patient recently diagnosed with Alzheimer’s disease takes a cognitive abilities test and scores a 45.

[DOC File]Sample Test Questions -- Test 1
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C. The entry corresponding to z= -1.34 is 0.0901 (this is the probability less), so, this shows most of students’ scores (90%) are higher than you. C Z= (48-60)/12=-1 . B. Look the table A, the entry corresponding to the z-score is 0.1587. A. Unstandardize the z-score. X= 60+12*5.2=122.4. 122.4 is much larger than the mean( =60). B. Range ...

[DOC File]California State University, Northridge
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Find the corresponding z-score(s). ( ) Find the probability. (use the Standard Normal Table) Ex(3) Fifty-one percent of adults in the United States whose New Year’s resolution was to exercise more achieved their resolution.

[DOC File]Learning Management System - Virtual University of Pakistan
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a) What percent of people earn less than $40,000? b) What percent of people earn between $45,000 and $65,000? c) What percent of people earn more than $70,000? Solution: For x = 40000, z = -0.5 Area to the left (less than) of z = -0.5 is equal to 0.3085 = 30.85% earn less than $40,000.

[DOC File]ANSWERS TO QUESTIONS
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Livestrong’s Z-Score is above the “likely-to-fail” level of 1.81 but also below the unlikely-to-fail value of 3.0. Livestrong should be concerned about his company’s situation. Research. Search string: “accounting policies” and disclosure. APB 22:Disclosure of Accounting Policies

[DOC File]Z-Score Practice Worksheet
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A score of 80, where the mean score of the sample data values is 30. A score of 20, where the mean score of the sample data values is 50. IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ of 160. What is the difference between Einstein’s IQ and the mean? Convert Einstein’s IQ score to a z score.

[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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Review how to convert the heights into z-scores, and explain why is it necessary to convert raw scores into a z-score. Ask, “What does it mean when the height is equivalent to a z-score of 1.5?” ... What percent of the machine gasket will have a life span between 725 and 775 hours?

[DOC File]Z-Score Practice Worksheet - Wheeler High School
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Pat scores a 76 and Chris scored a 94. What percent of individuals would score between Pat and Chris? IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ of 160. Convert Einstein’s IQ score to a z score. If we consider “usual IQ scores to be those that convert z scores between -2 and 2, is ...

[DOC File]6A: Characterizing a Data Distribution
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Example: The SAT is scored so that its mean is 500 and its standard deviation is 100. What percent of students score 600 or lower? Answer: The mean SAT score is 500. ... we can convert z-scores to percentiles and vice versa: z-score percentile----- -----–2 2 –1 16 ... a z-score of 2.8 is at the 99.7th percentile.

[DOCX File]Louisiana State University
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Objective 5: Convert a data item to a z-score. A . z-score. describes how many standard deviations a data item in a normal distribution lies above or below the mean. Data items greater than the mean have positive ... percent of the items in the distribution. Percentiles are often associated with scores on standardized tests. If a score is in ...

[DOCX File]www.campbell.k12.ky.us
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Calculate the z-score for a score of 87. 2.) The mean weight of pumpkins in a harvest is 12 pounds, with a standard deviation of 2. Calculate the z-score for a pumpkin with a weight of 9 pounds. 3. A set of ACT scores has a mean of 450, with a standard deviation of 30. A) What is the z-score for a score of 530? B)

[DOC File]Elementary Statistics
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A z-score gives deviations from the mean in terms of standard deviations. ... A study by the National Park Services revealed that 50 percent of vacationers going to the Rocky Mountain region visit Yellowstone Park, 40 percent visit the Tetons and 35 percent visit both. ... Convert the frequency distribution into a cumulative frequency distribution.

Convert percent to z score