Score at 3-years Score at 4-years 33 36 46 48 27 35 44 50 36 45 30 39 39 40 35 46 35 42 1. A developmental psychologist would like to determine how much fine motor skill changes for children from age 3 to age 4. He takes a random sample of 9 three-year old children and gives each a manual dexterity test that measures fine motor skill. He tests these same children a year later, when they are each four-years old. Higher scores on this test indicate better fine motor skills. Provide a point estimate, the 80% confidence interval, and the 90% confidence interval for the population mean of the difference scores.
Score at 3-years Score at 4-years 33 36 46 48 27 35 44 50 36 45 30 39 39 40 35 46 35 42 1. A developmental psychologist would like to determine how much fine motor skill changes for children from age 3 to age 4. He takes a random sample of 9 three-year old children and gives each a manual dexterity test that measures fine motor skill. He tests these same children a year later, when they are each four-years old. Higher scores on this test indicate better fine motor skills. Provide a point estimate, the 80% confidence interval, and the 90% confidence interval for the population mean of the difference scores.
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 10CT
Related questions
Question
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Score at 3-years |
Score at 4-years |
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33 |
36 |
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46 |
48 |
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27 |
35 |
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44 |
50 |
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36 |
45 |
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30 |
39 |
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39 |
40 |
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35 |
46 |
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35 |
42 |
1. A developmental psychologist would like to determine how much fine motor skill changes for children from age 3 to age 4. He takes a random sample of 9 three-year old children and gives each a manual dexterity test that measures fine motor skill. He tests these same children a year later, when they are each four-years old. Higher scores on this test indicate better fine motor skills. Provide a point estimate, the 80% confidence interval, and the 90% confidence interval for the population mean of the difference scores.
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