Eleanor us training for a a race . As a part of training she has a goal of running 20 miles on Saturday which of the following distances is approximately equal to her goal on Saturday

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

What is the missing step in this proof ?

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?