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The Mental Development Index (MDI) is a measure used in observing infants over time. Suppose MDI scores are approximately normally distributed with a mean of 105 and a standard deviation of 15. Which of the following is a true statement? Approximately 95% of all MDI scores are between 90 and 120. An infant with a MDI score of 135 would be farther away from the mean than an infant with a standardized MDI score of -2.25 O An infant with a MDI score of 125 would be at a higher percentile than an infant with a z-score of 2 An infant with a MDI core of 120 would be at the 84th percentile. Approximately 84% of all MDI scores are less than 90

The Mental Development Index (MDI) is a measure used in observing infants over time. Suppose MDI scores are approximately normally distributed with a mean of 105 and a standard deviation of 15. Which of the following is a true statement? Approximately 95% of all MDI scores are between 90 and 120. An infant with a MDI score of 135 would be farther away from the mean than an infant with a standardized MDI score of -2.25 O An infant with a MDI score of 125 would be at a higher percentile than an infant with a z-score of 2 An infant with a MDI core of 120 would be at the 84th percentile. Approximately 84% of all MDI scores are less than 90

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 4GP
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The Mental Development Index (MDI) is a measure used in observing infants over time. Suppose MDI scores are approximately normally distributed with a mean of 105 and a standard deviation of 15. Which of the following is a true statement? Approximately 95% of all MDI scores are between 90 and 120. An infant with a MDI score of 135 would be farther away from the mean than an infant with a standardized MDI score of -2.25 score An infant with a MDI score of 125 would be at a higher percentile than an infant with a z-score of 2 An infant with a MDI score of 120 would be at the 84th percentile. Approximately 84% of all MDI scores are less than 90
Transcribed Image Text:The Mental Development Index (MDI) is a measure used in observing infants over time. Suppose MDI scores are approximately normally distributed with a mean of 105 and a standard deviation of 15. Which of the following is a true statement? Approximately 95% of all MDI scores are between 90 and 120. An infant with a MDI score of 135 would be farther away from the mean than an infant with a standardized MDI score of -2.25 score An infant with a MDI score of 125 would be at a higher percentile than an infant with a z-score of 2 An infant with a MDI score of 120 would be at the 84th percentile. Approximately 84% of all MDI scores are less than 90
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