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The hypothesis test is a Left-tailed test and the parameter being tested is known as a Population mean.
A null hypothesis predicts no effect between variables while an alternative hypothesis predict an effect or relationship between variables of the study.
In the question, the given hypothesis test includes "H0: σ=110" and "H1: σ<110"
Hence, based on the test above, the hypothesis test is a Left-tailed test and the parameter being tested is known as a Population mean.
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