What are the null and alternative hypotheses? O A. Ho: o t03 H: of =0} O B. Ho: of =03 H1: of
What are the null and alternative hypotheses? O A. Ho: o t03 H: of =0} O B. Ho: of =03 H1: of
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Researchers measured bones from a species of fish from different time periods in an attermpt to determine whether changes occurred. Results are given below.
Assume that both samples are independent simple randorm samples from populations having normal distributions. Use a 0.05 significance level to test the claim that
the variation in bone size has changed in the last million years.
131.76 mm
136.84 mm
5.11 mm
prehistoric
modern
31
31
5.38 mm
What are the null and alternative hypotheses?
O A. Ho: of t03
O B. Ho: of =03
H1: of <o3
OC. Ho: of =03
O D. Ho: of =03
H1: of 203
vai
Use the F-table to find the upper critical value.
needed.)
out (Round to four decimal places
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Transcribed Image Text:nstructor-created question
Question Help v
Researchers measured bones from a species of fish from different time periods in an atteript to determine whether changes occurred. Results are given below.
Assume that both samples are independent simple random samples from populations having normal distributions. Use a 0.05 significance level to test the claim that
the variation in bone size has changed in the last million years.
131.76 mm
5.11 mm
prehistoric
modern
31
31
136.84 mm
5.38 mm
H: of 203
Use the F-table to find the upper critical value.
|(Round to four decimal places as needed.)
Identify the test statistic.
F=
(Round to four decimal places as needed.)
Does the sample provide sufficient evidence that the variance in the bone size for this species
of fish changed in the last million years?
Answer yes or no:
Click to select your answer(s) and then click Check Answer.
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