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Systolic blood pressure levels above $120\mathrm{mm}\mathrm{Hg}$ are considered to be high. For the 100 systolic blood pressure levels listed in the accompanying data set, the mean is $123.12000\mathrm{mm}\mathrm{Hg}$ and the standard deviation is $18.08916\mathrm{mm}\mathrm{Hg}$. Assume that a simple random sample has been selected. Use a 0.10 significance level to test the claim that the sample is from a population with a mean greater than $120\mathrm{mm}\mathrm{Hg}$.
Click the icon to view the data set of systolic blood pressure levels.

Identify the null and alternative hypotheses.
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(Type integers or decimals. Do not round.)