Solution Found!
A test was conducted to determine whether a wedge on the end of a plug fitting designed
Chapter 7, Problem 7.2-6(choose chapter or problem)
A test was conducted to determine whether a wedge on the end of a plug fitting designed to hold a seal onto the plug was doing its job. The data taken were in the form of measurements of the force required to remove a seal from the plug with the wedge in place (say, X) and the force required without the plug (say, Y). Assume that the distributions of X and Y are N(X , 2) and N(Y , 2), respectively. Ten independent observations of X are 3.26 2.26 2.62 2.62 2.36 3.00 2.62 2.40 2.30 2.40 Ten independent observations of Y are 1.80 1.46 1.54 1.42 1.32 1.56 1.36 1.64 2.00 1.54 (a) Find a 95% confidence interval for X Y . (b) Construct box-and-whisker diagrams of these data on the same figure. (c) Is the wedge necessary?
Questions & Answers
QUESTION:
A test was conducted to determine whether a wedge on the end of a plug fitting designed to hold a seal onto the plug was doing its job. The data taken were in the form of measurements of the force required to remove a seal from the plug with the wedge in place (say, X) and the force required without the plug (say, Y). Assume that the distributions of X and Y are N(X , 2) and N(Y , 2), respectively. Ten independent observations of X are 3.26 2.26 2.62 2.62 2.36 3.00 2.62 2.40 2.30 2.40 Ten independent observations of Y are 1.80 1.46 1.54 1.42 1.32 1.56 1.36 1.64 2.00 1.54 (a) Find a 95% confidence interval for X Y . (b) Construct box-and-whisker diagrams of these data on the same figure. (c) Is the wedge necessary?
ANSWER:Step 1 of 5
Given:
The data in the form of measurements of the force required to remove a seal from the plug with the wedge in place (say, X) and the force required without the plug (say, Y) is provided.
The distributions of X and Y are 
