An investigator is conducting a study to evaluate systolic arterial blood pressure on the day of admission to the hospital of patients in five different age groups. Initial analysis shows that the data from each age group are normally distributed. The investigator decides to use the mean of each group's data to test the null hypothesis that the admission blood pressures are equal in all 5 groups. Which of the following is the most appropriate technique to carry out this analysis? A. Analysis of variance (ANOVA) B. Chi-square 00000 C. Odds ratio D. Pearson correlation coefficient E. Student's t-test . Which critical value should be determined for hypothesis testing of scenario above? A. Z-value B. T-value C. P-value D. F-value E. x2-value