When a person needs an organ transplant, three tests are used, one of which is ABO blood typing. Type O persons can donate to all blood types. In a random sample of 100 people, 35 had type O. In a second random sample of 100 people, 40 had type O. Find the calculated -score used to compare proportions and interpret it. Use a confidence level of 95%. For your convenience, the formula is Confidence Level Critical -score 90% 5% 1.645 95% 2.5% 1.96 99% 0.5% 2.576 The calculated -score is 0.7303, which is not less than the critical value of 1.96, so we fail to reject the null hypothesis. The calculated -score is 0.703, which is not less than the critical value of 1.96, so we reject the null hypothesis. The calculated -score is 0.703, which is not greater than the critical value of 1.96, so we fail to reject the null hypothesis. The calculated -score is 0.703, which is not greater than the critical value of 1.96, so we reject the null hypothesis