<prompt> If the probability of full recovery following polio is 0.3 and the probability of paial recovery is 0.4, then the total probability of full or paial recovery following polio is:0.120.71.20.1  <response>: In case of mutually exclusive events, for example total and paial recovery, the total probability can be calculated by applying the law of addition. i.e. P full or paial recovery Pfull recovery Ppaial recovery 0.40.30.7 Ref: Medical biostatistics, 1st edition pg: 191 