Ticance? n of equality of variance at 5% [ nce interval for the difference be

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.5P: To determine the thermal conductivity of a structural material, a large 15-cm-thick slab of the...
icon
Related questions
Question
Solve only Qd
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):
Type-1 206 188 205 187 195 192 185 213 192 194 178 205
Type-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.
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: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): Type-1 206 188 205 187 195 192 185 213 192 194 178 205 Type-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. 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.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Dimensional Analysis
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Heat Transfer (Activate Learning wi…
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning