Final answer:
The probability of rain on a randomly selected day in Ferndale, California, during a non-leap year is approximately 21.64%, which is calculated by dividing 79 rainy days by the total of 365 days in the year.
Step-by-step explanation:
The probability of rain on any given day in Ferndale, California, can be calculated by dividing the number of days it rained by the total number of days in the year. Since it is not a leap year, there are a total of 365 days in the year.
To find the probability, use the formula:
Probability of Rain = (Number of Rainy Days) / (Total Number of Days in Year)
Plug in the given numbers:
Probability of Rain = 79 / 365
Calculating this, we get:
Probability of Rain = 0.2164 (rounded to four decimal places)
Therefore, if one day is randomly selected, there is approximately a 21.64% chance that it will rain that day in Ferndale.