Final answer:
The problem describes a situation where an elderly person's blood typing results showed no reactivity in both forward and reverse groupings. To address this, one must retest with fresh reagents and also test for the Rh factor, important for transfusions. Understanding the probabilities of having type O and Rh- factor blood is essential for blood donations and genetic compatibility.
Step-by-step explanation:
The question involves the verification of blood typing results. If an elderly is documented as having type O blood, and both the forward grouping (testing with anti-A, anti-B, and anti-AB serums) and the reverse grouping (testing the serum with A, B, and O cells) show no reactivity, there could be several reasons for this observation. To correct the situation, one approach is to retest using fresh reagents to rule out any degradation or procedural errors. Moreover, testing for the presence of the Rh factor should be performed since type O-negative blood is crucial for transfusions as it is considered the universal donor blood type. It's especially significant if the elderly individual will donate blood or requires transfusions.
Based on the percentages provided, it's determined that the probability of a person having both type O blood and the Rh- factor is 6 percent, while 94 percent do not have both type O and Rh- blood. Being informed of these probabilities is significant when considering aspects such as blood donation or genetic parentage, where blood types play a crucial role.