Answer:
The disadvantages: Convenience samples do not produce representative results. If you need to extrapolate to the target population, convenience samples aren't going to get you there. ... Much larger convenience samples are not more accurate than small probability samples.
Answer: b
explanation: only choice B equals -9 like the given equation.
Answer:
7 1/2
Step-by-step explanation:
2 1/2 times 3 is 7 1/2
I think Its C because in the frequency table or table given if the heads are counted there are 6 of them and over all 10 which will make 6/10