in a survey it was found that 35 percent of the population is using non biodegradable products while the remaining is using biodegradable products what is the probability that a person chosen at random uses non biodegradable products

Dear Student,
From the given data,
As the question says percentage of population using non-biodegradable product is 35%,'
Therefore probability of choosing a person who uses non-biodegradable products = 35% or 0.35 
​​​​​​Suppose population = 100
Number of people using non-biodegradable products = 35% of 100 = 35
That is why, Probability = 35/100 = 0.35
I hope you understand
Regards