4.One sample t-test . Suppose that we consider the basic systolic blood- pressure (SBP) of 14 HIBV infective patients in Table 1; and s of this sample are 151.OmmHg and 16.9mmHg, respectively. Without assuming that the population standard deviation is known, can we test the null hypothesis that the population SBP average of HBV infective patients is 140.0mmHg (the same as the general population)? Number 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. SBP. 156. 150. 120. 165. 147. 170. 120. 160. 175. 148. 167. 150. 135. 151