Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.84.8 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 2424 samples is 5.25.2 ppm with a variance of 1.001.00. Does the data support the claim at the 0.050.05 level? Assume the population distribution is approximately normal.

Find the Null and Alternative hypothesis

Find the Test Statistic

Find the P-Value

Find the Decision (Reject/Not)

Conclusion