The half of 3/4 is 0.375, or 3/8. All you have to do is multiply 3/4 times 1/2.
Answer:
The sample size must be greater than or equal to 756
Step-by-step explanation:
The formula to calculate the error of the proportion is the following

where p is the proportion, n the sample size, E is the error and z is the z-score for a confidence level of 95%
For a confidence level of 95% 
We know that for this case 
We require that the error be 0.03 as maximum
Therefore we solve for the variable n

Answer:
a
Step-by-step explanation:
right