The following table represents the observed frequencies for

The following table represents the observed frequencies for the data presented in exercise 17.24 and the adjusted standardized residuals for each of the cells. Using this information and the criterion of 2 indicate for which of these cells there is a significant difference between the observed and the expected frequencies.

accidents no accidents

rain observed 19 26 45

adjusted

resdual 2.5 -2.5

no rain observed 20 71 91

adjusted

residual -2.5 2.5

39 97 136

Accidents No accidents

Rain 19 20 45

no rain 20 71 91

39 97 136

Please can you help me resolving this problem??

Solution