Which describes a uniform probability model?

Question

Which describes a uniform probability model?

Responses
A an even or odd sum from rolling two dicean even or odd sum from rolling two dice
B selecting a day of the week using only the first letter of that dayselecting a day of the week using only the first letter of that day
C selecting a ball from 3 yellow balls and 2 red ballsselecting a ball from 3 yellow balls and 2 red balls
D the number of heads and tails from flipping two coins

Answer 1

C selecting a ball from 3 yellow balls and 2 red balls

Answer 2

The correct answer is C - selecting a ball from 3 yellow balls and 2 red balls. A uniform probability model means that each outcome has an equal likelihood of occurring. In this case, since there are 3 yellow balls and 2 red balls, the probability of selecting a yellow ball is 3/5 and the probability of selecting a red ball is 2/5, making it a uniform probability model. The other options do not have equal probabilities for each outcome.