Two catalysts in a batch chemical process are being compared for their effect on the output of the process reaction. A sample of 10 batches was prepared using catalyst 1 and gave an average yield of 82 with a sample standard deviation of 6. A sample of 12 batches was prepared using catalyst 2 and gave an average yield 78 and a sample standard deviation of 4. Find a 99% confidence interval for the difference between the population means, assuming that the populations are approximately normally distributed with equal variances. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. Let µ, be the population mean for catalyst 1 and let µ2 be the population mean for catalyst 2. The confidence interval is <µ1 - H2<: (Round to two decimal places as needed.)

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Two catalysts in a batch chemical process are being compared for their effect on the output of the process reaction. A sample of 10 batches was prepared using
catalyst 1 and gave an average yield of 82 with a sample standard deviation of 6. A sample of 12 batches was prepared using catalyst 2 and gave an average yield
78 and a sample standard deviation of 4. Find a 99% confidence interval for the difference between the population means, assuming that the populations are
approximately normally distributed with equal variances.
Click here to view page 1 of the table of critical values of the t-distribution.
Click here to view page 2 of the table of critical values of the t-distribution.
Let µ, be the population mean for catalyst 1 and let µ2 be the population mean for catalyst 2.
The confidence interval is
<H1 - Hz<
(Round to two decimal places as needed.)
Transcribed Image Text:Two catalysts in a batch chemical process are being compared for their effect on the output of the process reaction. A sample of 10 batches was prepared using catalyst 1 and gave an average yield of 82 with a sample standard deviation of 6. A sample of 12 batches was prepared using catalyst 2 and gave an average yield 78 and a sample standard deviation of 4. Find a 99% confidence interval for the difference between the population means, assuming that the populations are approximately normally distributed with equal variances. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. Let µ, be the population mean for catalyst 1 and let µ2 be the population mean for catalyst 2. The confidence interval is <H1 - Hz< (Round to two decimal places as needed.)
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