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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