Answer:
about 98 percent
Step-by-step explanation:
about 78.09% of the atmosphere is nitrogen and 20.95% of oxygen so when we add 78 and 20 we get 98% .Therefore about 98%of the earth is composed of nitrogen and oxygen
Given the data:
Individual Method 1 Method 2 1 7 5 2 5 9 3 6 8 4 7 7 5 5 6
The point estimate for the difference between the means is the difference between the mean of method one and the mean of method 2
