Confidence Interval: Sampling Soybean Meal
Not what you're looking for?
A sampling of a lot of soybean meal gave the following composition for Lysine in (grams/kilogram):
22.2
24.8
24.7
26.5
20.9
23.8
26.0
25.6
27.0
23.9
Do the following:
a) Construct a 99% two sided confidence interval for (std. deviation)^2.
b) Calculate a 99% lower confidence bound for (std deviation)^2.
c) Calculate a 90% lower confidence bound for (std deviation).
d) Compare the intervals computed.
Purchase this Solution
Solution Summary
In about 160 words, a neat, step-by-step solution is provided which outlines how to construct a two-sided confidence interval and lower confidence bound. All calculations are provided.
Solution Preview
(a) Variance for the given data = (sigma)^2 = 3.658
Standard error of (sigma)^2 = SE = (sigma)^2 * sqrt(2/n) = 3.658 * sqrt(2/10) = 1.636
The 99% CI for the variance = [variance - 2.576 * SE, ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.