Z score for 0 75

    • [DOC File]Z-Score Practice Worksheet - Long Branch Public Schools

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      A score of 60, where the mean score of the sample data values is 40. Z=2. A score that is 30 points below the mean. z=-3. A score of 80, where the mean score of the sample data values is 30. Z=5. A score of 20, where the mean score of the sample data values is 50. Z=-3. IQ scores have a mean of 100 and a standard deviation of 16.

    • Z Score 0.75

      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]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]CHAPTER 2 REVIEW

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      The z-score for the Ames family’s income is A. –0.75 B. 0.3 C. 0.75 D. 0.86 E. None of these, because z-score cannot be used unless the distribution is Normal.

    • [DOC File]AP Stats Chapter 2 Exam Review

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      A z-score is: If a group of data has a mean of 80 and a standard deviation of 13.6, what is the raw score interval that should contain the lower 75% of the data? Suppose the average score on a national test is 500 with a standard deviation of 100.

    • [DOC File]Statistics

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      normalcdf (80, 90, 75, 8) = 0.2356. Therefore, 23.56% of the class got B’s. (c) The teacher decides to give A’s to the top 10% of the class. Since you want to know what the top 10% of scores would look like, the area to the left would be 0.90. That is, a z-score of z = 1.285. giving x = 85.24.

    • [DOCX File]Z-Scores Worksheet

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      Now, we can compute the z-score and get z = (0.65 – 0.75) / 0.0433 = -2.31. Then, we use a z-table to find P(Z < -2.31) = 0.0104. 38. B Note that we are taking a random sample of 143 adult males. Since this sample size is larger than 30, we can use the Central Limit Theorem and conclude that average weight is approximately normally ...

    • [DOC File]Exam 3 Practice Questions - University of Florida

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      On one measure of attractiveness, scores are normally distributed with a mean of 3.93 and a standard deviation of 0.75. What is the z-score for a rating of 2.75? Scores on an anti-aircraft exam are normally distributed with a mean of 99.56 and a standard deviation of 25.84. Find a z-score for a score of 110.00 and a score of 150.00.

    • [DOC File]Z-Score Practice Worksheet - Ms. Shultis

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      The z-score of Ann’s test grade is 0.75. Explain what this z-score represents in relation to the mean of the class grades. The mean of a normally distributed set of data is 125. A data value of 100 has a z-score …

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