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Mathematics, 21.04.2020 18:58 mathman783

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.1 parts/million (ppm). A researcher believes that the current ozone level is not at a normal level. The mean of 26 samples is 6.6 ppm with a standard deviation of 1.0. Assume the population is normally distributed. A level of significance of 0.01 will be used. Find the value of the test statistic. Round your answer to three decimal places.

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Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone...

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