Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.46.4 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 2727 samples is 6.86.8 ppm with a standard deviation of 1.11.1. Does the data support the claim at the 0.050.05 level? Assume the population distribution is approximately normal.

Step1of5:

State the null and alternative hypotheses.

Ho is?

Ha is?