Question

How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches...

How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from students doing a laboratory exercise:            

23869 30547 28028 28924 28190
26329 29429 27350 26715 24661
23632 27095 26458 24291 27478
26842 24833 32766 23013 28277

We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 2900 pounds.

Give a 95% confidence interval for the mean load required to pull the wood apart (give your answer with three decimal places).

The sample mean is _____ (give three decimal places)

95% confidence interval for the mean load is ___ to ____ .

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4...
How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here 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 a) 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...
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir...
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...
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir...
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...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches long and 1.5 inches square? The following are data from students performing a comparable laboratory exercise. Suppose that the strength of pieces of wood like these follow a Normal distribution with standard deviation 3000 pounds. 33,210 / 31,910 / 32,580 / 26,470 / 33,270 / 32,280 / 32,980 / 32,070 / 30,480 / 32,700 / 23,000 / 30,960 / 32,670 / 33,690 / 32,290...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches long and 1.5 inches square? The following are data from students performing a comparable laboratory exercise. Suppose that the strength of pieces of wood like these follow a Normal distribution with population standard deviation of σ = 3000 pounds. 33,200     31,870     32,550     26,540     33,280     32,300     33,050     32,030     30,510     32,720     23,090     30,940     32,700     33,650     32,390     24,060     30,150     31,290     28,710     31,880     (a) We are interested in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT