Population = all Texas 8th graders
Sample = Mrs. Jones's thirty 8th graders
Sampling method = convenience sampling
Yes, there was a sampling bias. Since the complete sample was from the same school and class, it does not represent the total population of Texas 8th graders very well.
Hoped this helped :D
Answer:
5x^3−7x^2
Step-by-step explanation:
i think at least
Answer:sorry
Step-by-step explanation:
Sorry I need points to help
Let the number of Sociology books = y; the number of History books = x
⇒ x + y = 475 (2)
also since the number of history books sold was 83 less than sociology,
then x = y - 83 (1)
BY substituting (1) into (2)
⇒ (y - 83) + y = 475
2y = 475 + 83
y = (558 ÷ 2)
y = 279
⇒ x = 279 - 83
x = 196
∴ Number of History books is 196 & number of Sociology books is 279.
I believe the answer is C, but plz correct me if I’m wrong.