A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24 , 8.25, 8.20 , 8.23 , 8.24 ,8.21, 8.26 , 8.26 ,8.20 , 8.25 , 8.23, 8.23, 8.19 ,8.28, 8.24. Test the hypothesis that population mean of diameter is at least 8.25? Use 5% level of significance. also find 95% C.I for population mean.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24 , 8.25, 8.20 , 8.23 , 8.24 ,8.21, 8.26 , 8.26 ,8.20 , 8.25 , 8.23, 8.23, 8.19 ,8.28, 8.24. Test the hypothesis that population mean of diameter is at least 8.25? Use 5% level of significance. also find 95% C.I for population mean.
MATLAB: An Introduction with Applications
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![A machine produces metal rods used in an automobile suspension system. A random sample of 15
rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows:
8.24, 8.25 , 8.20 , 8.23, 8.24 , 8.21, 8.26 , 8.26 , 8.20 , 8.25 , 8.23, 8.23, 8.19 , 8.28 ,
8.24.
Test the hypothesis that population mean of diameter is at least 8.25? Use 5% level of significance.
also find 95% C.I for population mean.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9da0eef7-e5a3-44e1-8377-6cd88424735f%2Fb09bc07c-807a-463b-8075-2963e450fd8c%2F2pdf96k_processed.png&w=3840&q=75)
Transcribed Image Text:A machine produces metal rods used in an automobile suspension system. A random sample of 15
rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows:
8.24, 8.25 , 8.20 , 8.23, 8.24 , 8.21, 8.26 , 8.26 , 8.20 , 8.25 , 8.23, 8.23, 8.19 , 8.28 ,
8.24.
Test the hypothesis that population mean of diameter is at least 8.25? Use 5% level of significance.
also find 95% C.I for population mean.
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