A normal distribution of scores has a mean of 72 and a standard deviation of 11. Find the z-scores corresponding to each of the following values: A score that is 20 points above the mean. A score that is 10 points below the mean. A score that is 15 points above the mean A score that is 30 points below the mean. A fifth grader takes a standardized achievement test (mean = 115, standard deviation = 10) and scores a 148. What is the child’s percentile rank? Three students take equivalent stress tests. Which is the highest relative score (meaning which has the largest z score value)? A score of 144 on a test with a mean of 130 and a standard deviation of 34. A score of 90 on a test with a mean of 85 and a standard deviation of 18. A score of 18 on a test with a mean of 21 and a standard deviation of 5.
A normal distribution of scores has a mean of 72 and a standard deviation of 11. Find the z-scores corresponding to each of the following values: A score that is 20 points above the mean. A score that is 10 points below the mean. A score that is 15 points above the mean A score that is 30 points below the mean. A fifth grader takes a standardized achievement test (mean = 115, standard deviation = 10) and scores a 148. What is the child’s percentile rank? Three students take equivalent stress tests. Which is the highest relative score (meaning which has the largest z score value)? A score of 144 on a test with a mean of 130 and a standard deviation of 34. A score of 90 on a test with a mean of 85 and a standard deviation of 18. A score of 18 on a test with a mean of 21 and a standard deviation of 5.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 19PPS
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- A
normal distribution of scores has amean of 72 and a standard deviation of 11. Find the z-scores corresponding to each of the following values:
- A score that is 20 points above the mean.
- A score that is 10 points below the mean.
- A score that is 15 points above the mean
- A score that is 30 points below the mean.
- A fifth grader takes a standardized achievement test (mean = 115, standard deviation = 10) and scores a 148. What is the child’s percentile rank?
- Three students take equivalent stress tests. Which is the highest relative score (meaning which has the largest z score value)?
- A score of 144 on a test with a mean of 130 and a standard deviation of 34.
- A score of 90 on a test with a mean of 85 and a standard deviation of 18.
- A score of 18 on a test with a mean of 21 and a standard deviation of 5.
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