Respuesta :
Answer: increase the sample size
Step-by-step explanation: the margin of error for any confidence interval is given by the formulae below.
Margin of error = critical value × standard deviation/√n
From what we can see the critical value and standard deviation are constants, the only variables here are the margin of error and sample size which are inversely proportional to each other, that is the margin of error is inversely proportional to the square of the sample size.
Hence, reducing the sample size will increase the margin of error while increasing the sample size will reduce the margin of error.
