Question

2. Record the number of pins on the water. Be careful to not counts twice. There were __71__ pins in the water and ___14__ pins on the soil (non-water points).

3. Calculate a sample proportion of points that are on water and a 90% confidence interval for the proportion of the Earth that is covered with water. 90% Confidence Interval __(0.119,0.275)___

4. Ask “Google” what percent of the water’s surface is truly covered by water. Record your answer here. __71%__

5. Does your confidence interval contain the true proportion of the population? (Yes or No) ___ Explain why or why not. __________________________________________________________

Answer 1