Corn was grown in two different kinds of soils A and B. The heights of the stalks were measured. A sample of 13 stalks from soil A gave a mean height of 6.3 ft and a standard deviation of 1.2 ft. A sample of 16 stalks from soil B gave a mean height of 6.5 ft and a standard deviation of 1.1 ft. Assume the heights are normally distributed. To be specific, assume the heights of stalks from soil A has the distribution N(μA, 02), and the heights of stalks from soil B has the distribution N(μB, O²). (a) Find a 98% confidence interval for the parameter A. (b) Test H₁0A = σB against H₁ : σA ‡ σв at significance level a = 0.10. What is your conclusion? (c) Test H₁ : μA = µÂ against H₁ : µÃ ‡ µÂ at significance level a = 0.02. What is your conclusion?
Corn was grown in two different kinds of soils A and B. The heights of the stalks were measured. A sample of 13 stalks from soil A gave a mean height of 6.3 ft and a standard deviation of 1.2 ft. A sample of 16 stalks from soil B gave a mean height of 6.5 ft and a standard deviation of 1.1 ft. Assume the heights are normally distributed. To be specific, assume the heights of stalks from soil A has the distribution N(μA, 02), and the heights of stalks from soil B has the distribution N(μB, O²). (a) Find a 98% confidence interval for the parameter A. (b) Test H₁0A = σB against H₁ : σA ‡ σв at significance level a = 0.10. What is your conclusion? (c) Test H₁ : μA = µÂ against H₁ : µÃ ‡ µÂ at significance level a = 0.02. What is your conclusion?
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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