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MATLAB: An Introduction with Applications
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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Q3 The deflection temperature under load for two different types of plastic pipe is being investigated. Two random samples of 12 pipe specimens are tested, and the deflection temperatures observed are as follows (in °F): 192 185 213 192 Туре-1 206 188 205 187 195 194 178 205 Туре-2 177 197 206 201 180 | 176 185 200| 197 193 198 188 a. Assuming the variances of two types are equal, do the data support the claim that the deflection temperature under load for type 1 pipe exceeds that of type 2 at 5 % level of significance? b. Check the assumption of equality of variance at 5% level of significance. c. Find the 95% confidence interval for the difference between the two means. d. Check the results obtained in part a),b) and c} using Rstudio. Write your conclusion based on the p value obtained in RStudio.
Transcribed Image Text:Q3 The deflection temperature under load for two different types of plastic pipe is being investigated. Two random samples of 12 pipe specimens are tested, and the deflection temperatures observed are as follows (in °F): 192 185 213 192 Туре-1 206 188 205 187 195 194 178 205 Туре-2 177 197 206 201 180 | 176 185 200| 197 193 198 188 a. Assuming the variances of two types are equal, do the data support the claim that the deflection temperature under load for type 1 pipe exceeds that of type 2 at 5 % level of significance? b. Check the assumption of equality of variance at 5% level of significance. c. Find the 95% confidence interval for the difference between the two means. d. Check the results obtained in part a),b) and c} using Rstudio. Write your conclusion based on the p value obtained in RStudio.
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