1) Use the contigency table to the right to calculate the marginal frequencies and find the expected frequency for each call in the contingency table. Assume that the variables are independent.

REsult Stretched Not stretched

injury 23 21

no injury 217 184

(a) find the expected frequency for each cell in the contingency table

result stretched not stretched Total

injury 23 21 44

no injury 217 184 401

TOTAL 240 205 445

result stretched not stretched

injury ? ?

no injury ? ?

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