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Caffeine in a sample of chocolate was measured five times, and the results were 1265 ppm caffeine with a standard deviation of 9 ppm. According to the product label, the chocolate contains 1250 ppm caffeine. Are the experimental results statistically different from the label value at the 95% confidence level? Yes, because tcalc ttable No, because tcale < ttable No, because tealc> ttable

Caffeine in a sample of chocolate was measured five times, and the results were 1265 ppm caffeine with a standard deviation of 9 ppm. According to the product label, the chocolate contains 1250 ppm caffeine. Are the experimental results statistically different from the label value at the 95% confidence level? Yes, because tcalc ttable No, because tcale < ttable No, because tealc> ttable

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3. How would you solve this ppm Ttest problem?

Item 3: Question Caffeine in a sample of chocolate was measured five times, and the results were 1265 ppm caffeine with a standard deviation of 9 ppm. According to the product label, the chocolate contains 1250 ppm caffeine. Are the experimental results statistically different from the label value at the 95% confidence level? Yes, because tcalc<ttable Yes, because tcalc > ttable No, because tcalc<ttable No, because tcalc > ttable
Transcribed Image Text:Item 3: Question Caffeine in a sample of chocolate was measured five times, and the results were 1265 ppm caffeine with a standard deviation of 9 ppm. According to the product label, the chocolate contains 1250 ppm caffeine. Are the experimental results statistically different from the label value at the 95% confidence level? Yes, because tcalc<ttable Yes, because tcalc > ttable No, because tcalc<ttable No, because tcalc > ttable
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