Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

The efficiency for a steel specimen immersed in a phosphating tank is the weight 0 the phosphate coating divided by the metal loss (both in

image text in transcribed
The efficiency for a steel specimen immersed in a phosphating tank is the weight 0 the phosphate coating divided by the metal loss (both in mg/ftz). An article gave the accompanying data on ank temperature (X) and efficiency ratio (y). |'I'emp. 180 182 184 184 184 184 184 185 185 186 186 186 186 188 188 189 190 191 Ratio 0.96 1.70 1.37 1.58 1.59 2.15 2.17 0.80 1.35 0.86 1.73 1.92 2.52 1.55 2.42 2.92 1.91 3.08 Consider this simple linear regression model to answer the following questions. Ratio = Bo + [31*Temperature + e, where e ~ N(O, a) (a) Determine the slope and intercept of the estimated regression line. (Round your answers to 5 decimal places, if needed.) slope: intercept: (b) Calculate a predicted value for efficiency ratio when tank temperature is 186. (Round your answers to 4 decimal places, if needed.) 9 = :l (c) Calculate the values of the residuals from the least squares line for the four observations for which temperature is 186. (Round your answers to 4 decimal places, if needed.) (186, 0.86): (186, 1.73): (186, 1.92): (186, 2.52): Why do they not all have the same sign? 0 Some predicted values are below the temperature average while others are above the regression line. 0 Some observed values are below the temperature average while others are above the regression line. 0 Some predicted values are below the regression line while others are above the regression line. 0 Some observed values are below the regression line while others are above the regression line

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Practical Linear Algebra A Geometry Toolbox

Authors: Gerald Farin, Dianne Hansford

3rd Edition

1466579587, 9781466579583

More Books

Students also viewed these Mathematics questions

Question

Is there any evidence that contradicts this statement?

Answered: 1 week ago

Question

Do not get married, wait until I come, etc.

Answered: 1 week ago

Question

Do not come to the conclusion too quickly

Answered: 1 week ago

Question

Engage everyone in the dialogue

Answered: 1 week ago