4.11 Consider the hardness testing experiment described in Section 4.1. Suppose that the experiment was conducted...

4.11 Consider the hardness testing experiment described in Section 4.1. Suppose that the experiment was conducted as described and that the following Rockwell C‐scale data (coded by subtracting 40 units) obtained:

	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

Analyze the data from this experiment.
Use the Fisher LSD method to make comparisons among the four tips to determine specifically which tips differ in mean hardness readings.
Analyze the residuals from this experiment.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

(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 Analyze...

Describe the mouse “survival” experiment conducted by Hoesktra and colleagues: what was it testing, how was...

Describe the mouse “survival” experiment conducted by Hoesktra and colleagues: what was it testing, how was it performed, what were the results, and what were the limitations to this experiment (i.e. what could the researchers not do and/or what research questions remained to be explored with further experiments)?

2. An experiment in teaching introductory biology was conducted at a large university. One section was...

2. An experiment in teaching introductory biology was conducted at a large university. One section was taught by the traditional lecture-lab method, a second was taught by an all lab/demonstration approach with no lectures, a third was taught entirely by a series of videotaped lectures and demonstrations that students were free to view at any time and as often as they wanted. Students were randomly assigned to each of the three sections and, at the end of the semester, random...

Suppose an experiment was conducted to compare the fracture toughness of high-purity steel of some type...

Suppose an experiment was conducted to compare the fracture toughness of high-purity steel of some type with commercial-purity steel of the same type. For 9 high-purity specimens, the sample mean toughness and sample standard deviation of toughness (in some scale) were 1.82 and 0.6, respectively, whereas for 9 commercial-purity specimens, the sample mean and sample standard deviations were 2.43 and 0.82, respectively. Assume the data for both the high- and commercial-purity steels are normally distributed. Does this data suggest that...

Consider two independent experiments testing for two different and independent genetic mutations in rabbits. • •Experiment...

Consider two independent experiments testing for two different and independent genetic mutations in rabbits. • •Experiment A: Tests 12 rabbits for a mutation that occurs with probability 0.1. Let X be the number of these rabbits w/ this mutation. • Experiment B: Tests 16 rabbits for a mutation that occurs with probability 0.25. Let Y be the number of these rabbits w/ this mutation. (a) Compute P(X ≤ 6) (b) Compute P(10 ≤ Y ). (c) Compute the joint probability...

Consider an economy described by the IS-LM-PC model, and suppose that agents in it have unanchored...

Consider an economy described by the IS-LM-PC model, and suppose that agents in it have unanchored inflation expectations. Finally, assume that the economy begins at the medium run equilibrium with a positive medium run rate of inflation. Invariably, a drop in consumer confidence in this economy will produce the following immediate outcome. Select one: a. Inflation acceleration; b. A decrease in potential output; c. Deflation; d. Disinflation;

Consider the perfectly competitive market for canoes. Suppose the market demand for canoes is described by:...

Consider the perfectly competitive market for canoes. Suppose the market demand for canoes is described by: Q d = 200 − 2 P and the market supply of canoes is described by: Q s = 2 P. Suppose there is currently a price floor of $70 in place in the market for canoes. Consumer surplus under this price floor is (A) $900 (B) $4,900 (C) $2,500 (D) $1,800 . Suppose the government removes the price floor, consumer surplus will (A)...

3. Interference: Consider the double slit experiment conducted in lab. You now have a new double...

3. Interference: Consider the double slit experiment conducted in lab. You now have a new double slit slide to analyze. On the wall 1.75m away from the slits, the first minima occurs 0.65 mm to the side of the central maxima when using the red laser (wavelength=633 nm). a) Find the slit spacing. b) If the fourth maximum (from the central maximum) is missing, what is the slit width? Be sure to justify your answer with the appropriate equation(s). c)...

Consider the online auction site described in Problem 2.31 (Chapter 2, Page no 165). Suppose you...

Consider the online auction site described in Problem 2.31 (Chapter 2, Page no 165). Suppose you want to employ the Publish-Subscribe (also known as Observer) design pattern in your design solution for Problem 2.31. Which classes should implement the Publisher interface? Which classes should implement the Subscriber interface? Explain your answer. (Note: You can introduce new classes or additional methods on the existing classes if you feel it necessary for solution.).

Subjects