Question 3 The average score of all sixth graders in school District A on a math aptitude exam is 75 with a standard deviation of 8.1. A random sample of 80 students in one school was taken. The mean score of these 100 students was 71. Does this indicate that the students of this school are significantly different in their mathematical abilities than the average student in the district? Use a 5% level of significance.
Question 3 The average score of all sixth graders in school District A on a math aptitude exam is 75 with a standard deviation of 8.1. A random sample of 80 students in one school was taken. The mean score of these 100 students was 71. Does this indicate that the students of this school are significantly different in their mathematical abilities than the average student in the district? Use a 5% level of significance.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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![Question 3
The average score of all sixth graders in school District A on a math aptitude exam is 75 with a
standard deviation of 8.1. A random sample of 80 students in one school was taken. The mean
score of these 100 students was 71. Does this indicate that the students of this school are
significantly different in their mathematical abilities than the average student in the district? Use
a 5% level of significance.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd9233af7-28fd-489b-a49d-2327960b93f1%2Fc5137812-a22d-4a02-a0d5-65fefd8bf527%2F37z0e3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 3
The average score of all sixth graders in school District A on a math aptitude exam is 75 with a
standard deviation of 8.1. A random sample of 80 students in one school was taken. The mean
score of these 100 students was 71. Does this indicate that the students of this school are
significantly different in their mathematical abilities than the average student in the district? Use
a 5% level of significance.
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