Oil field pipes are internally coated in order to prevent corrosion. Researchers at a university investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 12 sections of coated interior pipe. The data (in micrometers) are shown in the table to the right. A Minitab analysis of the data is given below. Complete parts a and b. 2.54 1.44 2.15 1.99 1.45 1.68 2.32 1.35 2.18 One-Sample T: ROUGHD Mean 2.33 95% CI (1.69745, 2.20088) SE Mean StDev 2.15 1.81 Variable 0.11437 0.39617 12 1.94917 ROUGH a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout (Type integers or a decimals.) frec st Enter your answer in the edit fields and then click Check Answer Chock Answer Clear Al remaining e here to search

Question

Please show TI 84 steps

Oil field pipes are internally coated in order to prevent corrosion. Researchers at a university investigated the influence that coating may have on the
surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 12
sections of coated interior pipe. The data (in micrometers) are shown in the table to the right. A Minitab analysis of the data is given below. Complete
parts a and b.
2.54
1.44
2.15
1.99
1.45
1.68
2.32
1.35
2.18
One-Sample T: ROUGHD
Mean
2.33
95% CI
(1.69745, 2.20088)
SE Mean
StDev
2.15
1.81
Variable
0.11437
0.39617
12
1.94917
ROUGH
a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout
(Type integers or a decimals.)
frec
st
Enter your answer in the edit fields and then click Check Answer
Chock Answer
Clear Al
remaining
e here to search

Image Transcription

Oil field pipes are internally coated in order to prevent corrosion. Researchers at a university investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 12 sections of coated interior pipe. The data (in micrometers) are shown in the table to the right. A Minitab analysis of the data is given below. Complete parts a and b. 2.54 1.44 2.15 1.99 1.45 1.68 2.32 1.35 2.18 One-Sample T: ROUGHD Mean 2.33 95% CI (1.69745, 2.20088) SE Mean StDev 2.15 1.81 Variable 0.11437 0.39617 12 1.94917 ROUGH a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout (Type integers or a decimals.) frec st Enter your answer in the edit fields and then click Check Answer Chock Answer Clear Al remaining e here to search

Expert Answer

Want to see the step-by-step answer?

See Answer

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

See Answer
*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Imagine that you look up a critical t value in a t- table and your observed t value for a specific  ...

A: Introduction:Suppose a t test is being performed with ν degrees of freedom, at level of significance...

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean o...

A: The provided information is:

Q: Brandon Lang is a creative entrepreneur who has developed a novelty soap item called Jackpot to targ...

A: Hello there! there are more than three subparts in the question. According to our policies we cannot...

Q: Airline passengers arrive randomly and independently at the passenger-screening facility at a major ...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Tanya takes her Physics test and is told that her Z-score is 3.10. If the class mean was 75 and the ...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...

Q: a highly selective boarding school will only admit students who place at least 1.5 standard deviatio...

A: It is given that the mean and standard deviation are 200 and 26, respectively.

Q: A population of values has a normal distribution with μ=60.4μ=60.4 and σ=98.4σ=98.4. You intend to d...

A: It is given that the mean and standard deviations are 60.4 and 98.4Probability that the selected val...

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may var...

A: It is given that 39 are extroverts out of 65 professional actors.

Q: One out of four cars at a dealearship is white. If they sell twenty cars at random, what is the prob...

A: From the given information, one out four cars is white. That is, the probability of white car is 1/4...