Answer:
wym by 4 decimal places
Step-by-step explanation:
Answer:
hm okay
Step-by-step explanation:
The sample size, n required to produce a margin of error, M, in a probability proportion distribution is given by:

The above formular shows that the sample size is inversely proportional to the Margin of error.
Then we have:

where k is some constant.
Now suppose we decrease M by a factor of 3,


Therefore, if we decrease the Margin of error by a factor of 3, we need to increase the sample size by a factor of 9.