Six measurements were made of the concentration (in percent) of ash in a certain variety of spinach. The sample mean was 19.35 and the sample standard deviation was 0.577. a. Find a 95% confidence interval for the concentration of ash. b. Find a 98% confidence interval for the concentration of ash. c. If the six measurements had been 19.26, 19.50, 19.64, 18.26, 19.93, 19.51, would the confidence intervals in part (a) and (b) valid? Explain.
Six measurements were made of the concentration (in percent) of ash in a certain variety of spinach. The sample mean was 19.35 and the sample standard deviation was 0.577. a. Find a 95% confidence interval for the concentration of ash. b. Find a 98% confidence interval for the concentration of ash. c. If the six measurements had been 19.26, 19.50, 19.64, 18.26, 19.93, 19.51, would the confidence intervals in part (a) and (b) valid? Explain.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Six measurements were made of the concentration (in percent) of ash in a certain
variety of spinach. The sample mean was 19.35 and the sample standard deviation was 0.577.
a. Find a 95% confidence interval for the concentration of ash.
b. Find a 98% confidence interval for the concentration of ash.
c. If the six measurements had been 19.26, 19.50, 19.64, 18.26, 19.93, 19.51, would the
confidence intervals in part (a) and (b) valid? Explain.
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