Question

In: Statistics and Probability

(Using R)Consider a hardness testing machine that presses a rod with a pointed tip into a...

(Using R)Consider a hardness testing machine that presses a rod with a pointed tip into a metal specimen with a known force. By measuring the depth of the depression caused by the tip the hardness of the specimen is determined. Four tips and four test coupon are available and following data are observed

Coupon

Tip

1

2

3

4

1

9.3

9.4

9.6

10.0

2

9.4

9.3

9.8

9.9

3

9.2

9.4

9.5

9.7

4

9.7

9.6

10.0

10.2
  1. Analyze the data from this experiment
  2. Perform a test to make comparisons among the four tips to determine specifically which tips differ in mean hardness readings.

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Expert Solution

orchestra answered 2 years ago
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