penetrate metal that is being tested. However, the manufacturer thinks it would be better to use a diamond indenter so that all types of metal can be tested. Because of differences between the tw The manufacturer of hardness testing equipment uses steel-ball indenters types of indenters, it is suspected that the two methods will produce different hardness readings. The metal specimens to be tested are large enough so that two indentions can be made. Therefore, the manufacturer uses both indenters on each specimen and compares th hardness readings. Construct a 95% confidence interval to judge whether the two indenters result in different measurements. Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers. E Click the icon to view the data table. Construct a 95% confidence interval to judge whether the two indenters result different measurements, where the differences are computed as 'diamond minus steel ball" The lower bound is The upper bound isO (Round to the nearest tenth as needed.) Data Table State the appropriate conclusion. Choose the correct answer below. O There is insuficient evidence to conclude that the two indenters produce different hardness readings. O There is sufficient evidence to conclude that the two indenters produce different hardness readings. Specimen 1 3 5 6 7 8 9 Steel ball 50 57 61 71 68 54 65 51 53 Diamond 52 56 61 74 69 55 68 51 56
penetrate metal that is being tested. However, the manufacturer thinks it would be better to use a diamond indenter so that all types of metal can be tested. Because of differences between the tw The manufacturer of hardness testing equipment uses steel-ball indenters types of indenters, it is suspected that the two methods will produce different hardness readings. The metal specimens to be tested are large enough so that two indentions can be made. Therefore, the manufacturer uses both indenters on each specimen and compares th hardness readings. Construct a 95% confidence interval to judge whether the two indenters result in different measurements. Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers. E Click the icon to view the data table. Construct a 95% confidence interval to judge whether the two indenters result different measurements, where the differences are computed as 'diamond minus steel ball" The lower bound is The upper bound isO (Round to the nearest tenth as needed.) Data Table State the appropriate conclusion. Choose the correct answer below. O There is insuficient evidence to conclude that the two indenters produce different hardness readings. O There is sufficient evidence to conclude that the two indenters produce different hardness readings. Specimen 1 3 5 6 7 8 9 Steel ball 50 57 61 71 68 54 65 51 53 Diamond 52 56 61 74 69 55 68 51 56
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter59: Areas Of Rectangles, Parallelograms, And Trapezoids
Section: Chapter Questions
Problem 79A
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Transcribed Image Text:The manufacturer of hardness testing equipment uses steel-ball indenters to penetrate metal that is being tested. However, the manufacturer thinks it would be better to use a diamond indenter so that all types of metal can be tested. Because of differences between the tw
types of indenters, it is suspected that the two methods will produce different hardness readings. The metal specimens to be tested are large enough so that two indentions can be made. Therefore, the manufacturer uses both indenters on each specimen and compares the
hardness readings. Construct a 95% confidence interval to judge whether the two indenters result in different measurements.
Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.
E Click the icon to view the data table.
Construct a 95% confidence interval to judge whether the two indenters result in different measurements, where the differences are computed as 'diamond minus steel ball.
The lower bound is
The upper bound is
(Round to the nearest tenth as needed.)
- X
Data Table
State the appropriate conclusion. Choose the correct answer below.
There is insufficient evidence to conclude that the two indenters produce different hardness readings.
There is sufficient evidence to conclude that the two indenters produce different hardness readings.
Specimen
1
2
3
7
8
9
Steel ball 50 57 61
71
68
54
65
51
53
Diamond
52 56 61 74
69
55
68
51
56
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