Sandy left downtown Durham, and three hours later, Mary left going 46 mph faster to catch up. After another two hours, Mary caug
1 answer:
You might be interested in
Answer:
The margin of error is multiplied by
Step-by-step explanation:
margin of error (ME) from the mean can be calculated using the formula
ME= where
- z is the corresponding statistic of the given confidence level
- s is the standard deviation of the sample (or of the population if it is known)
- N is the sample size
Since margin of error is proportional with inverse of ,
if we cut the sample size in half, the margin of error is multiplied by .