Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 39PS
Suppose that, when setting up the experiment in Problem 11.38, the operations manager is able to study the effect of side-to-side aspect in addition to air-jet pressure. Thus, instead of the one-factor completely randomized design in Problem 11.38, a two-factor factorial design was used, with first factor, side-to-side aspect, having two levels (nozzle and opposite) and the second factor, air-jet pressure, having three levels (30 psi, 40 psi, and 50 psi). A sample of 18 yarns is randomly assigned, 3 to each of the 6-side-to-side aspect and pressure level combinations. The breaking-strength, stored in yarn, are as follows:
At the 0.05 level of significance.
a. is there an interaction between side-to-side aspect and air-jet pressure?
b. is there an effect due to side-to-side aspect?
c. is there an effect due to air-jet pressure?
d. Plot the mean yarn breaking strength for each level to side-to-side aspect for each level of air-jet pressure.
e. if appropriate, use the Turkey procedure to study difference among the air-jet pressures.
f. On the basis of the results of (a) through (e), what conclusions can you reach concerning yarn breaking strength? Discuss.
g. Compare your results in (a) through (f) with those from the completely randomized design in Problem 11.38. Discuss fully.
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Chapter 11 Solutions
Basic Business Statistics, Student Value Edition
Ch. 11 - An experiment has a single factor with five groups...Ch. 11 - You are working with the same experiment as in...Ch. 11 - You are working with the same experiment as in...Ch. 11 - Consider an experiment with three groups, with...Ch. 11 - Prob. 5PSCh. 11 - You are working the same experiment as in Problem...Ch. 11 - One of the steps involved in the processing of...Ch. 11 - The more costly and time-consuming it is to export...Ch. 11 - A hospital conducted a study of the waiting time...Ch. 11 - A manufacturer of pens has hired an advertising...
Ch. 11 - Prob. 11PSCh. 11 - Brand valuations are critical to CEOs, financial...Ch. 11 - A pet food company has a business objective of...Ch. 11 - A transportation strategist wanted to compare the...Ch. 11 - Consider a two-factor factorial design with three...Ch. 11 - Prob. 16PSCh. 11 - Prob. 17PSCh. 11 - Prob. 18PSCh. 11 - Given a two-way ANOVA with two levels for factor A...Ch. 11 - Given a two-factor factorial experiment and the...Ch. 11 - Given the results from Problem 11.20, a. at the...Ch. 11 - An experiment was conducted to study the extrusion...Ch. 11 - Prob. 23PSCh. 11 - Prob. 24PSCh. 11 - A glass manufacturing company wanted to...Ch. 11 - Prob. 26PSCh. 11 - Prob. 27PSCh. 11 - Prob. 28PSCh. 11 - Prob. 29PSCh. 11 - Prob. 30PSCh. 11 - Prob. 31PSCh. 11 - Prob. 32PSCh. 11 - Prob. 33PSCh. 11 - Prob. 34PSCh. 11 - Prob. 35PSCh. 11 - Prob. 36PSCh. 11 - Prob. 37PSCh. 11 - Prob. 38PSCh. 11 - Suppose that, when setting up the experiment in...Ch. 11 - A hotel wanted to develop a new system for...Ch. 11 - Refer to the room service experiment in Problem...Ch. 11 - Prob. 42PS
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