Chi-square tests are common in genetics. A gene called ACTN3 encodes a protein which functions in fast-twitch muscles. People havedifferent variants of this gene, classified as RR, RX, or XX. Computer output is shown for testing whether the proportions in thesecategories are 0.25, 0.5, and 0.25, respectively. The observed counts come from a study¹ conducted in Australia.Chi-Square Goodness-of-Fit Test for Observed Counts(a) What is the sample size?n = iObserved = iExpected = iDegree of Freedom = iTestContributionCategory Observed Proportion Expected to Chi-SqRR1300.25109(e) What is the p-value?RXp-value =XXN(d) What are the degrees of freedom for the test?iV22680436(c) Which variant contributes the most to the chi-square statistic?DFFor this variant, is the observed value greater than or less than expected?2(b) What is the observed number of people with the variant RR for this gene? What is the expected number of people in this groupunder Ho?Do the assumed proportions appear to be accurate?0.500.25218109Chi-Sq P-value12.0550 0.0024.045870.293587.71560

Answered: Chi-square tests are common in…

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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