1) A test of very many students is modeled by a Normal Distribution. If the standarddeviation is 10 and the sample mean E(X) = 75 calculate with a 2.5% confidenceinterval given that the hypothesis H, = 80. Where we are assuming the following.Also for each of the following give the interval which yields confidence 2.5%1) The sample size is 502) the sample size is 1003) the sample size is 400

when the sample size is 50 97.5% confidence interval is given by x±zα2*σn = 75 ± 2.24*1050…

Answered: A test of very many students is…

A test of very many students is eviation is 10 and the sample me terval given that the hypothesis so for each of the following give The sample size is 50 the sample size is 100

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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Estimation

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Question

1) A test of very many students is modeled by a Normal Distribution. If the standard
deviation is 10 and the sample mean E(X) = 75 calculate with a 2.5% confidence
interval given that the hypothesis H, = 80. Where we are assuming the following.
Also for each of the following give the interval which yields confidence 2.5%
1) The sample size is 50
2) the sample size is 100
3) the sample size is 400

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