About 1/2 since there is only 2 sides to a coin.
Hope this picture helps you
Answer:
Sample size is 
Step-by-step explanation:
Given that,
Margin of error
%
Confidence level
%
Suppose, sample proportion
i.e. 
We know that,
Margin of error 
∴ 





squaring on both side,
∴ 
Hence, the sample size is,

Hence, the correct option is 
Answer:
answer is A
Step-by-step explanation:
3*2=6
2pi/2=pi
Answer:
B. 12.8
Step-by-step explanation:
I took the test.
Hope you pass( please mark(me) as brainiest.)