Some optometrists argue that as many as 25% of the elementary school children may have impaired vision. A random sample of 256 elementary school children was obtained, and each was given a vision test. Fifty were found to base some form of impaired vision. a) Is the sample size large enough to construct a confidence interval for p? b) Construct a 95% confidence interval for р. c) is there any evidence to suggest that the optometrists' claim of p= 0.25 is wrong? Justify your answer.

Some optometrists argue that as many as 25% of the elementary school children may have impaired vision. A random sample of 256 elementary school children was obtained, and each was given a vision test. Fifty were found to base some form of impaired vision. a) Is the sample size large enough to construct a confidence interval for p? b) Construct a 95% confidence interval for р. c) is there any evidence to suggest that the optometrists' claim of p= 0.25 is wrong? Justify your answer.

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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