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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Chapter 15, Problem 39PS
A molding machine that contains different cavities is used in producing plastic parts. The product characteristics of interest are the product length (in.) and weight (g). The mold cavities were filled with raw material powder and then vibrated during the experiment. The factors that were varied were the vibration time (seconds), the vibration pressure (psi), vibration amplitude
a. Develop the most appropriate multiple regression model to predict the length in cavity 1. Be sure to perform a through residual analysis. In addition, provide a detailed explanation of your results.
b. Repeat (a) for cavity 2.
c. Compare the results for length in the two cavities.
d. Develop the most appropriate multiple regression model to predict the product weight in cavity 1. Be sure to perform a thorough residual analysis. In addition, provide a detailed explanation of your results.
e. Repeat (d) for cavity 2.
f. Compare the results for weight in the two cavities.
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The width of an outer aircraft panel is uniformly distributed between 1.00 to 1.10 millimeters. Determine
the following:
a. Proportion of panels that exceed 1.05 millimeters
b. Thickness exceeded by 90% of the flanges
a. 0.50, 1.01
O b. NONE
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STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise.
33,19033,190
31,86031,860
32,59032,590
26,52026,520
33,28033,280
32,32032,320
33,02033,020
32,03032,030
30,46030,460
32,70032,700
23,04023,040
30,93030,930
32,72032,720
33,65033,650
32,34032,340
24,05024,050
30,17030,170
31,30031,300
28,73028,730
31,92031,920
We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that the characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with a standard deviation of 3000 pounds.
PLAN: We will estimate μ by giving a 99%99% confidence interval.
SOLVE: Find the sample mean ?¯. (Enter your answer rounded to the nearest whole number.)
?¯=
Give a 99%confidence interval,…
Chapter 15 Solutions
Basic Business Statistics, Student Value Edition
Ch. 15 - The following is the quadratic regression equation...Ch. 15 - Business actively recruit business student with...Ch. 15 - A study was conducted on automobile engines to...Ch. 15 - Prob. 4PSCh. 15 - In the production of printed circuit boards,...Ch. 15 - An automotive sales manager wishes to examine the...Ch. 15 - Researchers wanted to investigate the relationship...Ch. 15 - Prob. 8PSCh. 15 - Prob. 9PSCh. 15 - Prob. 10PS
Ch. 15 - Using the data of Problem 15.4 on page 600, stored...Ch. 15 - Using the data of Problem 15.6 on page 601, stored...Ch. 15 - Using the data of Problem 15.6 on page 601 stored...Ch. 15 - If the coefficient of determination between two...Ch. 15 - If the coefficient of determination between two...Ch. 15 - Prob. 16PSCh. 15 - Refer to Problem 14.5 on page 542. Perform a...Ch. 15 - Refer to Problem 14.6 on page 542. Perform a...Ch. 15 - Refer to Problem 14.7 on page 542. Perform a...Ch. 15 - Refer to Problem 14.8 on page 542. Perform a...Ch. 15 - Prob. 21PSCh. 15 - Prob. 22PSCh. 15 - Prob. 23PSCh. 15 - You need to develop a model to predict the asking...Ch. 15 - Accounting Today identified top public accounting...Ch. 15 - How can you evaluate whether collinearity exists...Ch. 15 - Prob. 27PSCh. 15 - Prob. 28PSCh. 15 - A Specialist in baseball analytics has expanded...Ch. 15 - In the production of printed circuit boards,...Ch. 15 - Hemlock Farms is a community located in the Pocono...Ch. 15 - Prob. 32PSCh. 15 - Prob. 33PSCh. 15 - Prob. 34PSCh. 15 - You are a real estate broker who wants to compare...Ch. 15 - You are a real estate broker who wants to compare...Ch. 15 - Financial analysts engage in business valuation to...Ch. 15 - Prob. 38PSCh. 15 - A molding machine that contains different cavities...Ch. 15 - The file Cites contains a sample of 25 cities in...Ch. 15 - In problem 15.32-15.36 you developed multiple...
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- The width of an outer aircraft panel is uniformly distributed between 1.00 to 1.10 millimeters. Determine the following: a. Proportion of panels that exceed 1.05 millimeters b. Thickness exceeded by 90% of the flanges a. 0.50, 0.96 O b.0.50, 1.01 Oc. 0.30, 0.96 O d. NONEarrow_forwardA machinist creates a solid steel part for a wind turbine. The part has a volume of 1,015 cubic centimeters. Steel can be purchased for $0.25 per kilogram and has a density of 7.95 g/cm3. If the machinist makes 500 of these parts, what is the total cost of the steel? Ex O A. $1,152.75 O C. $1,008.66 B. $2.12 O D. $2,017.31 LLarrow_forwardSTATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate ?μ by giving a 98% confidence interval. SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.) ?¯= Give a 98% confidence…arrow_forward
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