1). T-obtained is -6.56 and t-critical is -5.45. What is the correct conclusion? A P> .05; Reject the null hypothesis B P< .05; Retain the null hypothesis C P> .05; Retain the null hypothesis D P< .05; Reject the null hypothesis 2) T-obtained is -2.56 and t-critical is -5.45. What is the correct conclusion? A P< .05; Retain the null hypothesis. B P> O5; Retain the null hypothesis. C P> .05; Reject the null hypothesis D P< .05; Reject the null hypothesis 3)T-obtained is 6.56 and t-critical is 5.45. What is the correct conclusion? AP>.05; Reject the null hypothesis BP> .05; Retain the null hypothesis C P< .05; Reject the null hypothesis D P<.05; Retain the null hypothesis