Find the expected count and the contribution to the chi-square statistic for the (Group 1, Yes) cell in the two-way table below. begin{array}{|c|c|c|}

a2linetagadaW 2020-12-14 Answered
Find the expected count and the contribution to the chi-square statistic for the (Group 1, Yes) cell in the two-way table below.
YesNoTotalGroup 1710277987Group 211753231498 Total18856002485
Round your answer for the excepted count to one decimal place, and your answer for the contribution to the chi-square statistic to three decimal places.
Expected count=?
contribution to the chi-square statistic=?
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Expert Answer

tafzijdeq
Answered 2020-12-15 Author has 92 answers

Step 1 Given information YesNoTotalGroup 1710277987Group 211753231498 Total18856002485

Step 2 Expected value is given by

YesNoGroup 11885×9872485=748.7600×9872485=238.3Group 21885×14982485=1136.3600×14982485=361.7

Test statistic x2=(OiEi)2Ei
x2=(710748.7)2748.7+(277238.3)2238.3+(11751136.3)21136.3+(323361.7)2361.7=13.737

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