Two different formulas of an oxygenated motor fuel are being tested to study their road octane numbers. The variance of road octanenumber for formula 1 is o?1.5, and for formula 2 it is o,= 1.2. Two random samples of size n115and n220 are tested, andthe mean octane numbers observed are x89.5 fluid ounces and X293.1 fluid ounces. Assume normality.(a) Test the hypotheses Ho : µ1= H2 versus Hị :µ1 < µz using a = 0.05. Round your answer to three decimal places (e.g. 98.765).Zo =Но-(b) Calculate a 95% two-sided confidence interval on the mean difference road octane number, x1 – X2. Round your answer to threedecimal places (e.g. 98.765).< H1 - H2 <(c) What sample size would be required in each population if you wanted to be 95% confident that the error in estimating thedifference in mean road octane number is less than 1?ni = n2 =i. Round your answer up to the nearest integer.

We have to perform Z test for the difference in two means.

Answered: Two different formulas of an oxygenated…

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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