Please answer and explain all steps of the solution K101PracExa_SP18 [Compatibil
ID: 259904 • Letter: P
Question
Please answer and explain all steps of the solution
K101PracExa_SP18 [Compatibility Mode] Q- Search in Document Home Insert Design Layout References Mailings Review View tShare A Calibri Paste Heading1Heading 2 ubl Emph... Emphasis 1a 46. (Chi square) A large ear of corn has a total of 320 grains, including 182 Purple & Starchy, 54 Purple & sweet, 63 yellow & Starchy, and 21 yellow & sweet. Your Hypothesis is that this ear of corn was produced by a dihybrid cross (PpSs x PpSs) involving two pairs of heterozygous genes resulting in a theoretical (expected) ratio of 9:3:3:1. what is the Chi-square Ovalue? (Reminder: 2-(o-e)2/e) See lab ppt for "How to Solve Chi square problems". a. x2- 3.85 Good Fit Between Ear&Data; Poor Fit c. ?2=0.82 d, ?2= 0.02 df 90 70 60 50 20 10 05 01 15 31 46 1.64 2.71 3.85 6.64 47. Using the above problem, What is the degree of freedom? Is this a good fit? 2 21 71 1.05 1.39 3.22 4.60 5.99 9.21 df 1, yes df-2, no df-3, yes df-4, no 3 58 1.42 185 2.37 4.64 6.25 7.82 11.34 4 1.06 2.20 2.78 3.36 5.99 7.78 9.49 13.28 C. Page 9 of 9 2506 Words English (US) 222% +
Explanation / Answer
Chi square = 0.822
Degree of freedom - 3, yes
O E O-E (O-E)2/E purple and starch 182 9/16X320 = 180 -2 0.022 purple and sweet 54 3/16 X 320 = 60 -6 0.6 yellow and starch 63 3/16 X 320 = 60 3 0.15 yellow and sweet 21 1/16 X 320 = 20 1 0.05