Use a T-Test to Test the Claim μ < 12 $\mathrm { n } = 20 , \overline { \mathrm { x } } = 12.2 , \text { and } \mathrm { s } = 2.0$

Essay

Use a t-test to test the claim μ < 12.6 at α = 0.10, given the sample statistics $\mathrm { n } = 20 , \overline { \mathrm { x } } = 12.2 , \text { and } \mathrm { s } = 2.0$ Round the test statistic to the nearest thousandth.