MATH.STATISTICS W/APPL.>CUSTOM<
7th Edition
ISBN: 9781285923789
Author: Wackerly
Publisher: CENGAGE C
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Textbook Question
Chapter 11.7, Problem 46E
Refer to Exercise 11.16. Find a 95% prediction interval for the potency of a 1-ounce portion of antibiotic stored at 65◦F. Compare this interval to that calculated in Exercise 11.39.
11.16 An experiment was conducted to observe the effect of an increase in temperature on the potency of an antibiotic. Three 1-ounce portions of the antibiotic were stored for equal lengths of time at each of the following Fahrenheit temperatures: 30◦, 50◦, 70◦, and 90◦. The potency readings observed at the end of the experimental period were as shown in the following table.
- a Find the least-squares line appropriate for this data.
- b Plot the points and graph the line as a check on your calculations.
- c Calculate S2.
11.39 Refer to Exercise 11.16. Find a 95% confidence interval for the mean potency of a 1-ounce portion of antibiotic stored at 65◦F.
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Chapter 11 Solutions
MATH.STATISTICS W/APPL.>CUSTOM<
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