A supermarket chain packages ground beef using meat trays of two sizes: one that holds approximately 1 pound of meat, and one that holds approximately 3 pounds. A random sample of 35 packages in the smaller meat trays produced weight measurements with an average of 1.01 pounds and a standard deviation of 0.11 pound. (a) Construct a 99% confidence interval for the average weight of all packages sold in the smaller meat trays by this supermarket chain. (Round your answers to three decimal places.) Ib to Ib (b) What does the phrase "99% confident" mean? O There is a 1% chance that an individual sample mean will fall within the interval. O There is a 99% chance that an individual sample mean will fall within the interval. O In repeated sampling, 1% of all intervals constructed in this manner will enclose the population mean. O 99% of all values will fall within the interval. O In repeated sampling, 99% of all intervals constructed in this manner will enclose the population mean. (c) Suppose that the quality control department of this supermarket chain intends that the amount of ground beef in the smaller trays should be 1 pound on average. Should the confidence interval in part (a) concern the quality control department? Explain. Based on the confidence interval, the quality control department ---Select--- ♥ be concerned. Since 1 is ---Select--- the interval, the interval -.-Select--- v that u is different from 1.
A supermarket chain packages ground beef using meat trays of two sizes: one that holds approximately 1 pound of meat, and one that holds approximately 3 pounds. A random sample of 35 packages in the smaller meat trays produced weight measurements with an average of 1.01 pounds and a standard deviation of 0.11 pound. (a) Construct a 99% confidence interval for the average weight of all packages sold in the smaller meat trays by this supermarket chain. (Round your answers to three decimal places.) Ib to Ib (b) What does the phrase "99% confident" mean? O There is a 1% chance that an individual sample mean will fall within the interval. O There is a 99% chance that an individual sample mean will fall within the interval. O In repeated sampling, 1% of all intervals constructed in this manner will enclose the population mean. O 99% of all values will fall within the interval. O In repeated sampling, 99% of all intervals constructed in this manner will enclose the population mean. (c) Suppose that the quality control department of this supermarket chain intends that the amount of ground beef in the smaller trays should be 1 pound on average. Should the confidence interval in part (a) concern the quality control department? Explain. Based on the confidence interval, the quality control department ---Select--- ♥ be concerned. Since 1 is ---Select--- the interval, the interval -.-Select--- v that u is different from 1.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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21 this question has part a,b, and c
Based on the confidence interval, the quality control department
---Select--- should or should not be concerned. Since 1 is
---Select--- contained in, below, above the interval, the interval
---Select--- suggests or does not suggest that ? is different from 1.
![A supermarket chain packages ground beef using meat trays of two sizes: one that holds approximately 1 pound of meat, and one that holds approximately 3 pounds. A random sample of 35 packages in the smaller meat trays produced weight measurements with an average of 1.01 pounds and a standard deviation of 0.11 pound.
(a) Construct a 99% confidence interval for the average weight of all packages sold in the smaller meat trays by this supermarket chain. (Round your answers to three decimal places.)
[Answer Box] lb to [Answer Box] lb
(b) What does the phrase "99% confident" mean?
- [ ] There is a 1% chance that an individual sample mean will fall within the interval.
- [ ] There is a 99% chance that an individual sample mean will fall within the interval.
- [ ] In repeated sampling, 1% of all intervals constructed in this manner will enclose the population mean.
- [ ] 99% of all values will fall within the interval.
- [ ] In repeated sampling, 99% of all intervals constructed in this manner will enclose the population mean.
(c) Suppose that the quality control department of this supermarket chain intends that the amount of ground beef in the smaller trays should be 1 pound on average. Should the confidence interval in part (a) concern the quality control department? Explain.
Based on the confidence interval, the quality control department [Select Box] be concerned. Since 1 is [Select Box] the interval, the interval [Select Box] that μ is different from 1.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7104469d-fb7e-48cd-bb9c-a2d8cb607855%2Ff048ef65-b7ad-4ed3-937d-6514e7fdc120%2Frxpfc69_processed.png&w=3840&q=75)
Transcribed Image Text:A supermarket chain packages ground beef using meat trays of two sizes: one that holds approximately 1 pound of meat, and one that holds approximately 3 pounds. A random sample of 35 packages in the smaller meat trays produced weight measurements with an average of 1.01 pounds and a standard deviation of 0.11 pound.
(a) Construct a 99% confidence interval for the average weight of all packages sold in the smaller meat trays by this supermarket chain. (Round your answers to three decimal places.)
[Answer Box] lb to [Answer Box] lb
(b) What does the phrase "99% confident" mean?
- [ ] There is a 1% chance that an individual sample mean will fall within the interval.
- [ ] There is a 99% chance that an individual sample mean will fall within the interval.
- [ ] In repeated sampling, 1% of all intervals constructed in this manner will enclose the population mean.
- [ ] 99% of all values will fall within the interval.
- [ ] In repeated sampling, 99% of all intervals constructed in this manner will enclose the population mean.
(c) Suppose that the quality control department of this supermarket chain intends that the amount of ground beef in the smaller trays should be 1 pound on average. Should the confidence interval in part (a) concern the quality control department? Explain.
Based on the confidence interval, the quality control department [Select Box] be concerned. Since 1 is [Select Box] the interval, the interval [Select Box] that μ is different from 1.
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