Find a number L such that P|L 95. %3D Hint: A useful fact when using tables to find F-values is that P(k s U\/U2) = P(U2/U1 < 1/k). Basically this says to find the F-value that represents L, we must reciprocate the sides and change the

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...
icon
Related questions
Question
I am needing assistance with this problem. The question is
the part where it says "Find a number L".
Let S? denote the sample variance for a random sample of 10 In(LC50) values for copper and let S3
denote the sample variance for a random sample of 8 In(LC50) values for lead, both samples using the
same species of fish. The population variance for measurements on copper is assumed to be twice the
corresponding population variance for measurements on lead. Assume S? to be independent of S.
Find a number L such that PL<
= .95.
Hint: A useful fact when using tables to find F-values is that P(k s U\/U2) = P(U2/U1 s 1/k).
Basically this says to find the F-value that represents L, we must reciprocate the sides and change the
direction of the inequality because the F table only lists F-values for a s 0.1 in the upper tail. This L
value is on the lower side of the curve. Note that this also switches you numerator and denominator
degrees of freedom. If you use R this will be a non issue for you!
Transcribed Image Text:I am needing assistance with this problem. The question is the part where it says "Find a number L". Let S? denote the sample variance for a random sample of 10 In(LC50) values for copper and let S3 denote the sample variance for a random sample of 8 In(LC50) values for lead, both samples using the same species of fish. The population variance for measurements on copper is assumed to be twice the corresponding population variance for measurements on lead. Assume S? to be independent of S. Find a number L such that PL< = .95. Hint: A useful fact when using tables to find F-values is that P(k s U\/U2) = P(U2/U1 s 1/k). Basically this says to find the F-value that represents L, we must reciprocate the sides and change the direction of the inequality because the F table only lists F-values for a s 0.1 in the upper tail. This L value is on the lower side of the curve. Note that this also switches you numerator and denominator degrees of freedom. If you use R this will be a non issue for you!
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON