A simple random sample of 200 third graders in a large school district was chosen to participatein an after-school program to improve reading skills. After completing the program, the childrenwere tested, and 142 of them showed improvement in their reading skillsa) Construct a 95% confidence interval for the proportion of third graders in the school districtwhose reading scores would improve after completing the program.Answer: 0.647< p< 0.773b) Is it reasonable to conclude that more than 60% of the students would improve theirreading scores after completing the program? Answer: Yes, please explain.

Answered: Image /qna-images/answer/37884b84-839b-4389-b2de-32a788db3ffe.jpg

Answered: A simple random sample of 200 third…

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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I sampled 10 downtown Chicago restaurants for the price of their most expensive meal on the menu. Here are the prices: $45, $80, $70, $70, $60, $65, $80, $60, $50, $90 Construct a 99% confidence interval for the mean price of the most expensive meal at a downtown Chicago restaurant. Assume the population is approximately normal. Write a sentence using that confidence interval Using the values in the previous question, compute a 95% confidence interval for the standard deviation of the most expensive price for a mean in downtown Chicago.
A college administrator is interested in determining the proportion of students who receive some sort of financial aid. Instead of examining the records for all students, the administrator randomly draws 120 students and finds that 48 of them are receiving financial aid. Use a 90% confidence interval to estimate the true proportion of students who receive financial aid.
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