You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800 students. The standard deviation for the state is 3.8. What z score do you calculate? What is the area between the mean and the z score found in Appendix A of the textbook? What does this mean about the probability of this test score difference occurring by chance? Is it less than 0.05?
You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800 students. The standard deviation for the state is 3.8. What z score do you calculate? What is the area between the mean and the z score found in Appendix A of the textbook? What does this mean about the probability of this test score difference occurring by chance? Is it less than 0.05?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800 students. The standard deviation for the state is 3.8.
- What z score do you calculate?
- What is the area between the
mean and the z score found in Appendix A of the textbook? - What does this mean about the probability of this test score difference occurring by chance? Is it less than 0.05?
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