Use a T-Test to Test the Claim μ = $\mathrm { n } = 12 , \overline { \mathrm { x } } = 18.9 , \text { and } \mathrm { s } = 2.1$

Essay

Use a t-test to test the claim μ = 19.4 at α = 0.01 given the sample statistics $\mathrm { n } = 12 , \overline { \mathrm { x } } = 18.9 , \text { and } \mathrm { s } = 2.1$ Round the test statistic to the nearest thousandth .