A study of pollutants showed that certain industrial emissions
should not exceed 2.1 parts per million. You believe a
particular company may be exceeding this average. To test this
supposition, you randomly take a sample of nine air tests. The
sample average is 3.2 parts per million, with a sample
standard deviation of 0.5. Does this result provide enough
evidence for you to conclude that the company is exceeding the safe
limit? Use α = 0.05. Assume emissions are
normally distributed.
(Round your answer to 2 decimal places, e.g.
15.25.)
The value of the test statistic is ______ and we
__________ (fail to reject the null hypothesis) or
(reject the null hypothesis.)
A study of pollutants showed that certain industrial emissions should not exceed 2.1 parts per million. You believe a pa
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answerhappygod
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A study of pollutants showed that certain industrial emissions should not exceed 2.1 parts per million. You believe a pa
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