Two catalysts may be used in a batch chemical process. Twelve batches were prepared using catalyst 1, resulting in an average yield of 34 and a sample standard deviation of 3. Fifteen batches were prepared using catalyst 2, and they resulted in an average yield of 89 with a standard deviation of 2. Assume that yield measurements are approximately normally distributed with the same standard deviation. a) Is there evidence to support the claim that catalyst 2 produces higher mean yield than catalyst 1? Use a = 0.01. Yes. b) Find a 99% confidence interval on the difference in mean yields that can be used to test the claim in part (a). Round your answer to wo decimal places (e.g. 98.76). 4₁-4₂ -2.31 Statistical Tables and Charts
Two catalysts may be used in a batch chemical process. Twelve batches were prepared using catalyst 1, resulting in an average yield of 34 and a sample standard deviation of 3. Fifteen batches were prepared using catalyst 2, and they resulted in an average yield of 89 with a standard deviation of 2. Assume that yield measurements are approximately normally distributed with the same standard deviation. a) Is there evidence to support the claim that catalyst 2 produces higher mean yield than catalyst 1? Use a = 0.01. Yes. b) Find a 99% confidence interval on the difference in mean yields that can be used to test the claim in part (a). Round your answer to wo decimal places (e.g. 98.76). 4₁-4₂ -2.31 Statistical Tables and Charts
MATLAB: An Introduction with Applications
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![Your answer is partially correct.
Two catalysts may be used in a batch chemical process. Twelve batches were prepared using catalyst 1, resulting in an average yield of
84 and a sample standard deviation of 3. Fifteen batches were prepared using catalyst 2, and they resulted in an average yield of 89
with a standard deviation of 2. Assume that yield measurements are approximately normally distributed with the same standard
deviation.
(a) Is there evidence to support the claim that catalyst 2 produces higher mean yield than catalyst 1? Use a = 0.01. Yes.
(b) Find a 99% confidence interval on the difference in mean yields that can be used to test the claim in part (a). Round your answer to
two decimal places (e.g. 98.76).
M₁ M₂ S i -2.31
Statistical Tables and Charts](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbbba0909-7b4f-4e80-8e24-06dfda2d061e%2F12f6ce23-468d-4feb-a531-4d69aa249684%2Fq4gitri_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Your answer is partially correct.
Two catalysts may be used in a batch chemical process. Twelve batches were prepared using catalyst 1, resulting in an average yield of
84 and a sample standard deviation of 3. Fifteen batches were prepared using catalyst 2, and they resulted in an average yield of 89
with a standard deviation of 2. Assume that yield measurements are approximately normally distributed with the same standard
deviation.
(a) Is there evidence to support the claim that catalyst 2 produces higher mean yield than catalyst 1? Use a = 0.01. Yes.
(b) Find a 99% confidence interval on the difference in mean yields that can be used to test the claim in part (a). Round your answer to
two decimal places (e.g. 98.76).
M₁ M₂ S i -2.31
Statistical Tables and Charts
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