Question: To test \(\mathrm{H}_{\mathrm{D}}: \mu=20\) versus \(\mathrm{H}_{1}: \mu<20\), a simple random sample of size \(\mathrm{n}=16 \mathrm{is}\) obtained from a population that is known to be normally distributed.

1. If \(\bar{x}=18.4\) and \(s=4.4\), compute the test statistic.
2. If the researcher decides to test this hypothesis at the \(\alpha=0.05\) level of significance, will the researcher reject the null hypothesis?

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