You developed a model to predict high risk individuals for cervical cancer. The testing phase gave you the confusion matrix below

Observed $($Model prediction$)$

Expected $($Real data$)$

Ca $(+)$

Ca $(-)$

Ca $(+)$

$450$

$550$

Ca $(-)$

$50$

$98,950$

Briefly explain whether the model is useful to find high risk patients for cervical cancer