Answered: A developmental psychologist would like…

Name: A developmental psychologist would like to determine how much fine mot
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Description: 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 t

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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. Using the data in the table below, provide a point estimate, the 80% confidence interval, and the 90% confidence interval for the population mean of the difference scores.

Score at
Score at
3-years
33
46
4-years
36
48
27
35
44
50
36
45
30
39
39
35
40
46
35
42

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