You generate a 95% confidence interval for the mean carapace width of dungeness crabs, which is 141 +/-18 millimeters. Which answer below could you use to improve your estimate (i.e. make your margin of error smaller)?
- Increase the confidence level to 99%.
- Invoke the Central Limit Theorem.
- Increase the number of crabs in your sample
- Eat one out of every 10 crabs in your sample so that you don’t get hungry while you’re making measurements..
We are given that: a 95% confidence interval for the mean carapace width of dungeness crabs, which is 141 +/-18 millimetres.
We have to make margin of error smaller than existing margin of error.
Margin of Error is given by formula: