Final answer:
The probability that a randomly selected single parent in the U.S. military is in the Army is calculated by dividing the number of single parents in the Army by the total number of single parents in the military, which is 34/91.
Step-by-step explanation:
The question asks for the probability of choosing a single parent from the U.S. military who is in the Army. To calculate this probability, we will use the total number of single parents in the Army divided by the total number of single parents in the U.S. military. According to the provided data, there are 34 single parents in the Army and 91 single parents in total within the U.S. military.
The calculation for the probability is therefore:
Probability = Number of single parents in the Army / Total number of single parents in the military = 34 / 91
When calculated, this results in a probability which can then be expressed as a decimal or percentage.