Question: need help fast pls Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normaily found is

need help fast pls

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normaily found is 6.0parts/million(ppm).A researcher believes that the current ozone level is at an insufficient level. The mean of 990 samples is 5.9ppm. Assume the variance is known to be 1.21. Does the data support the claim at the 0.05 level? Step 2 of 5 : Enter the value of the z test statistic. Round your answer to two decimal places. Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.0parts/m illion (ppm) A researcher believes that the current ozone level is at an insufficient level. The mean of 990 samples is 5.9ppm. Assume the variance is known to be 1.21. Does the data support the claim at the 0.05 level? Step 3 of 5 : Specify if the test is one-tailed or two-tailed. Answer 2 Points Keyboard Shortcuts One-Tailed Test Two-Talled Test

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