Question

christ - followers, 22% are nominal christian adherents, 39% have heard the gospel but have not responded, and 29% have virtually no exposure to the gospel (https://joshuproject.net/assets/media/handouts/status - of - world - evangelization.pdf). understanding probabilities and statistics help us calculate the odds in favor and the odds against a certain event. so, 10% of people in the world are christ - followers means that 10 out of 100 people in the world follow christ, or, 1 out of 10 people follow christ. thus, the odds of a person following christ is 1 to 9, or, 1:9. on the other hand, that means 9 out of 10 people are not christ - followers, or, the odds of a person not following christ is 9 to 1, or, 9:1. understanding problems as these help us to realize the urgency of the great commission, as stated in matthew 28:18 - 20: “then jesus came to them and said, all authority in heaven and on earth has been given to me. therefore go and make disciples of all nations, baptizing them in the name of the father and of the son and of the holy spirit, and teaching them to obey everything i have commanded you. and surely i am with you always, to the very end of the age.” using these statistics from the joshua project, give the probability that a randomly selected person will either have heard the gospel, but not responded or have had virtually no exposure the gospel. 29% 68% 39%

Explanation:

Step1: Identify relevant probabilities

The probability of having heard the gospel but not responded is 39% ($P(A)=0.39$), and the probability of having virtually no exposure to the gospel is 29% ($P(B)=0.29$).

Step2: Use addition rule for mutually - exclusive events

Since a person cannot both have heard the gospel but not responded and have virtually no exposure to the gospel at the same time (mutually - exclusive events), the probability of either event occurring is $P(A\cup B)=P(A)+P(B)$.
$P(A\cup B)=0.39 + 0.29=0.68$ or 68%.

Answer:

68%