3. (40 pts.) To measure the half-life of a newly synthesized probe molecule, two instruments were employed. Below are the data collected. Quantity Instrument 1 Instrument 2 Mean half-life (ns) 1.374 1.336 1 nalytical chemistry emester II, 2021-22 Standard deviation (ns) 0.021 0.038 Number of measurements 5 3 a. Perform the appropriate statistical test to determine if the two means obtained are significantly different? The comparison is made at 95% confidence level. b. Perform the appropriate statistical test to determine if the two standard deviations obtained are significantly different? The comparison is made at 95% confidence level