How Does a Higher Hash Rate Influence a Miner’s Chance of Solving a Block and Earning a Reward?

A miner's hash rate represents the number of computational guesses they can make per second to find a valid block hash. The chance of solving a block is directly proportional to the miner's share of the total network hash rate.

For example, a miner contributing 1% of the total network hash rate has a statistical 1% chance of finding the next block. Higher hash rate equals a higher probability of reward.