Answer:
The proportion of the population that attempted to stop smoking is 0.8239.
Step-by-step explanation:
In the problem, we are provided with the following details:
Total sample size, n = 142
Individuals who attempted to quit smoking = 117
Parameter:
- A parameter represents a numerical descriptor of a population.
The calculation for the population proportion is as follows:

The proportion of the population that attempted to stop smoking is 0.8239.
The correct option is the first one - refer to the image for the solution:
Answer:

Step-by-step explanation:
Step 1:

Step 2:

Step 3:

Step 4:
To complete the square, add
to both sides.

Step 5:

Step 6:
Taking square roots on both sides.
