Which of the following statements is correct? population parameters are used to make inferences about sample statistics. population statistics are used to make inferences about sample parameters. sample parameters are used to make inferences about population statistics. sample statistics are used to make inferences about population parameters.

Sample statistics are used to make inferences about population parameters.

Step-by-step explanation:

A number which describes a population is called a parameter, such as a proportion or percentage.

A statistic is a number which may be calculated from the data observed in a random sample without demanding the use of any unknown parameters.

The mean and variance of a population are population parameters.

Thus, fourth statement is the right answer "Sample statistics are used to make inferences about population parameters."

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

2x=70  

x=70/2

x=35

thats the answer

step-by-step explanation: