Final answer:
The t-statistic for 14 degrees of freedom and a p-value of less than 0.05 in a two-tailed test is approximately 2.145.
Step-by-step explanation:
The t-statistic for 14 degrees of freedom (df) and a two-tail test with a significance level (alpha, α) of p < 0.05 can be found using a t-distribution table or calculator that provides critical t-values. For df = 14, the critical t-value associated with a p-value of less than 0.05 for a two-tailed test is approximately 2.145. This means that if your calculated t-statistic exceeds 2.145 or is less than -2.145, you would reject the null hypothesis at the 5% significance level.