Tatiana wonders if the same proportion of teens and adults check social media at least once per day. She wants to obtain a random sample of people from each group to test if there is a significant difference between the proportion of teens and adults that check social media at least once per day.

: Pa - Pt = 0

  :Pa - Pt ≠ 0

Step-by-step explanation:

Let:

If she wants to know that whether there is a significant difference between the proportion of teens and adults that check social media at least once per day, we must form the scenarios in 2 days:

: Pa - Pt = 0

  :Pa - Pt ≠ 0

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (: