The daily yield for a local chemical plant has averaged 880 tons for the last several years. The quality control manager would like to know whether this average has changed in recent months. She randomly selects 50 days from the computer database and computes the average and standard deviation of the n = 50 yields as x = 871 tons and s = 21 tons, respectively. Test the appropriate hypothesis using a = .05.
The daily yield for a local chemical plant has averaged 880 tons for the last several years. The quality control manager would like to know whether this average has changed in recent months. She randomly selects 50 days from the computer database and computes the average and standard deviation of the n = 50 yields as x = 871 tons and s = 21 tons, respectively. Test the appropriate hypothesis using a = .05.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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![The daily yield for a local chemical plant has averaged 880 tons for the last several years. The quality
control manager would like to know whether this average has changed in recent months. She randomly
selects 50 days from the computer database and computes the average and standard deviation of the n
= 50 yields as x = 871 tons and s = 21 tons, respectively. Test the appropriate hypothesis using a =
.05.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa20d428b-d89c-4e53-985f-c0e288d80482%2Fadd77516-970e-4a0b-8df4-7e89a354c6d6%2Fsfy9htd_processed.png&w=3840&q=75)
Transcribed Image Text:The daily yield for a local chemical plant has averaged 880 tons for the last several years. The quality
control manager would like to know whether this average has changed in recent months. She randomly
selects 50 days from the computer database and computes the average and standard deviation of the n
= 50 yields as x = 871 tons and s = 21 tons, respectively. Test the appropriate hypothesis using a =
.05.
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