8) An engineer believes that a new manufacturing process has improved the strength of a certain material. The previous average strength was 150 MPa. A sample of 35 materials processed using the new method has an average strength of 160 MPa and a standard deviation of 12 MPa. Use a one-sample t-test to determine if the new process has a significant impact at a 95% confidence level.

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8) An engineer believes that a new manufacturing process has improved the strength of a certain material. The
previous average strength was 150 MPa. A sample of 35 materials processed using the new method has an
average strength of 160 MPa and a standard deviation of 12 MPa. Use a one-sample t-test to determine if the
new process has a significant impact at a 95% confidence level.
Transcribed Image Text:8) An engineer believes that a new manufacturing process has improved the strength of a certain material. The previous average strength was 150 MPa. A sample of 35 materials processed using the new method has an average strength of 160 MPa and a standard deviation of 12 MPa. Use a one-sample t-test to determine if the new process has a significant impact at a 95% confidence level.
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