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In a mechanical process. A strip of plastic with nominal thickness of 5 inches is used
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In a mechanical process. A strip of plastic with nominal thickness of 5 inches is used. The company wants to increase the mean speed of the process and believes that this can be achieved by reducing the thickness of the strip to 4 inches. Eight samples of each strip thickness are used, and the strip speed is measured. For the 5-inches strip, the sample data result is x-bar1 =1.15 and 51 =0.11, while for the 4-inches strip, the data yield x-bar2 =1.06 and s2 =0.09. Do the data support the claim that reducing the strip thickness increases the mean speed of the strip? Use a=0.10 and assume that the two population variances are equal and the underlying population of strip speed is normally distributed. What is the P-value for this test?
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[Solved] In a mechanical process. A strip of plastic with nominal thickness of 5 inches is used
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- Submitted On 03 Aug, 2020 06:05:14
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