S1 letter B only Two types of material are suitable for an electronics componentmanufacturer to use. The breaking strength of this material isimportant. It is known that o, = 02 = 1.5 psi. From a random sampleof size n115 and n2 = 18, you obtain Xbar1 = 164.5 and Xbar2 =%3D150.0.(a) Calculate a 95% confidence interval on the difference in means.Illustrate your answer.(b) The company will not adopt material 1 unless its mean breakingstrength exceeds that of material 2 by at least 15 psi. Based on thesample information, should it use material 1? Use a = 0.05 inreaching a decision. Find the P-value.

Since you have asked for (B) prt so i have answered that part only. Thank you

Answered: (b) The company will not adopt material…

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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A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The t-value for a 95% confidence interval is: A. 2.09302 B. 1.724718 C. 2.08596 D. 1.729133 E. none of the preceding
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Come up with your own data for a problem that would ask for a 90% confidence interval utilizing Z. Clearly label your variables.

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(b) The company will not adopt material 1 unless its mean breaking strength exceeds that of material 2 by at least 15 psi. Based on the sample information, should it use material 1? Use a = 0.05 in reaching a decision. Find the P-value.