A simple random sample of 200 third graders in a large school district was chosen to participate in an after- school program to improve reading skills.After completing the program, the children were tested, and 142 of them showed improvement in their reading skills a) Construct a 95% confidence interval for the proportion of third graders in the school district whose reading scores would improve after completing the program Answer: 0.647
A simple random sample of 200 third graders in a large school district was chosen to participate in an after- school program to improve reading skills.After completing the program, the children were tested, and 142 of them showed improvement in their reading skills a) Construct a 95% confidence interval for the proportion of third graders in the school district whose reading scores would improve after completing the program Answer: 0.647
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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Solve using confidence interval
Transcribed Image Text:A simple random sample of 200 third graders in a large school district was chosen to participate in an after-
school program to improve reading skills.After completing the program, the children were tested, and 142 of
them showed improvement in their reading skills
a) Construct a 95% confidence interval for the proportion of third graders in the school district whose reading scores would
improve after completing the program Answer: 0.647 <p<0.773
b) Is it reasonable to conclude that more than 60% of the students would improve their reading scores after completing the
program? Explain Answer: YES (Explain why)
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