Student Solutions Manual for Devore's Probability and Statistics for Engineering and the Sciences, 9th
9th Edition
ISBN: 9798214004020
Author: Jay L. Devore
Publisher: Cengage Learning US
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Textbook Question
Chapter 9.2, Problem 29E
The article “Effect of Internal Gas Pressure on the Compression Strength of Beverage Cans and Plastic Bottles” (J. of Testing and Evaluation, 1993: 129–131) includes the accompanying data on compression strength (lb) for a sample of 12-oz aluminum cans filled with strawberry drink and another sample filled with cola. Does the data suggest that the extra carbonation of cola results in a higher average compression strength? Base your answer on a P-value. What assumptions are necessary for your analysis?
Sample | Sample | Sample | |
Beverage | Size | SD | |
Strawberry drink | 15 | 540 | 21 |
Cola | 15 | 554 | 15 |
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The article “Effect of Internal Gas Pressure on the Com- pression Strength of Beverage Cans and Plastic Bottles” (J. of Testing and Evaluation, 1993: 129–131) includes the accompanying data on compression strength (lb) for a sample of 12-oz aluminum cans filled with strawberry drink and another sample filled with cola. Does the data suggest that the extra carbonation of cola results in a higher average compression strength? Base your answer on a P-value. What assumptions are necessary for your analysis? ( use ? = 0.01 )
54. Grip is applied to produce normal surface forces that
compress the object being gripped. Examples include
two people shaking hands, or a nurse squeezing a
patient's forearm to stop bleeding. The article
"Investigation of Grip Force, Normal Force, Contact
Area, Hand Size, and Handle Size for Cylindrical
Handles" (Human Factors, 2008: 734-744) included
the following data on grip strength (N) for a sample of 42
individuals:
16
18 18 26 33 41 54 56 66 68 87 91 95
98 106 109 111 118 127 127 135 145 147 149 151 168
172 183 189 190 200 210 220 229 230 233 238 244 259
294 329 403
a. Construct a stem-and-leaf display based on repeat-
ing each stem value twice, and comment on inter-
esting features.
b. Determine the values of the fourths and the
fourthspread.
c. Construct a boxplot based on the five-number sum-
mary, and comment on its features.
5
Grip is applied to produce normal surface forces thatcompress the object being gripped. Examples includetwo people shaking hands, or a nurse squeezing apatient’s forearm to stop bleeding. The article“Investigation of Grip Force, Normal Force, ContactArea, Hand Size, and Handle Size for CylindricalHandles” (Human Factors, 2008: 734–744) includedthe following data on grip strength (N) for a sample of 42individuals:16 18 18 26 33 41 54 56 66 68 87 91 9598 106 109 111 118 127 127 135 145 147 149 151 168172 183 189 190 200 210 220 229 230 233 238 244 259294 329 403a. Construct a stem-and-leaf display based on repeatingeach stem value twice, and comment on interestingfeatures.b. Determine the values of the fourths and thefourthspread.c. Construct a boxplot based on the five-number summary,and comment on its features.d. How large or small does an observation have to be toqualify as an outlier? An extreme outlier? Are thereany outliers?e. By how much could the observation 403, currentlythe…
Chapter 9 Solutions
Student Solutions Manual for Devore's Probability and Statistics for Engineering and the Sciences, 9th
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