I need answer if this question please

A random sample of n = 19 items is taken, resulting in a sample mean of a - 19.0 with a sample standard deviation of s = 4.5. Assume x is normally distributed and use this information and a 0.05 test the following hypotheses. Ho: ul = 16 Ha: u # 16 Determine the critical value to and t score value t based on the sample data. The critical value to The t score value t based on the sample data =