STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 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 u by giving a 90% confidence interval. SOLVE: Find the sample mean r. (Enter your answer rounded to the nearest whole number.) 30841 Give a 90% confidence interval, [low, high], for the mean load required to pull the wood apart. (Enter your answers rounded to the nearest whole number.). Publisher: W.H. Fre Question Source: Moore, The Basic Practice Of Statistics, 8e
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 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 u by giving a 90% confidence interval. SOLVE: Find the sample mean r. (Enter your answer rounded to the nearest whole number.) 30841 Give a 90% confidence interval, [low, high], for the mean load required to pull the wood apart. (Enter your answers rounded to the nearest whole number.). Publisher: W.H. Fre Question Source: Moore, The Basic Practice Of Statistics, 8e
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![STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 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 u by giving a 90% confidence interval.
SOLVE: Find the sample mean r. (Enter your answer rounded to the nearest whole number.)
30841
Give a 90% confidence interval, [low, high], for the mean load required to pull the wood apart. (Enter your answers rounded
to the nearest whole number.).
Publisher: W.H. Fre
Question Source: Moore, The Basic Practice Of Statistics, 8e](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8eb6e7b0-0d60-4b8a-b0a0-fe5012b175de%2Fa706354a-9360-42bd-abcb-23c27944aa66%2Fnnjt6l.jpeg&w=3840&q=75)
Transcribed Image Text:STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 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 u by giving a 90% confidence interval.
SOLVE: Find the sample mean r. (Enter your answer rounded to the nearest whole number.)
30841
Give a 90% confidence interval, [low, high], for the mean load required to pull the wood apart. (Enter your answers rounded
to the nearest whole number.).
Publisher: W.H. Fre
Question Source: Moore, The Basic Practice Of Statistics, 8e
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