How is probability used in inferential statistics? A researcher uses probability to calculate the mean value of a sample. A researcher uses probability to decide whether to draw a sample from a population. A researcher uses probability to help her decide whether she believes a treatment has had an effect.

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?