Two machines used for cutting steel are calibrated to cut exactly the same lengths. To test this hypothesis, each machine is used to cut 10 pieces of steel. These pieces are then measured (with negligible measuring error). Suppose the resulting data are as follows: Machine 1  Machine 2  |  Machine 1  Machine 2 122.40       122.36        |  121.76        122.40 123.12       121.88        |  122.31        122.12 122.51       122.20        |  123.20        121.78 123.12       122.88        |  122.48        122.85 122.55       123.43        |  121.96        123.04 Assume that it is known that the standard deviation of the length of a cut (made by either machine) is equal to 0.50

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
icon
Related questions
Question

Two machines used for cutting steel are calibrated to cut exactly the same
lengths. To test this hypothesis, each machine is used to cut 10 pieces of
steel. These pieces are then measured (with negligible measuring error).
Suppose the resulting data are as follows:
Machine 1  Machine 2  |  Machine 1  Machine 2
122.40       122.36        |  121.76        122.40
123.12       121.88        |  122.31        122.12
122.51       122.20        |  123.20        121.78
123.12       122.88        |  122.48        122.85
122.55       123.43        |  121.96        123.04
Assume that it is known that the standard deviation of the length of a cut
(made by either machine) is equal to 0.50.

Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill