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In: Statistics and Probability

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

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.8 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 12 samples is 8.0 ppm with a standard deviation of 0.9. Does the data support the claim at the 0.1 level? Assume the population distribution is approximately normal.

Step 4 of 5 :  

Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places.

Solutions

Expert Solution

t critical value 1.363

Reject Ho if t>1.363

orchestra answered 2 years ago
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