A random sample of males who finished the marathon is partitioned into three categories with ages of 21-29, 30-39, and 40 or over. The times (in seconds) are obtained for the selected males. The analysis of variance results obtained from software are below. The significance level is 0.05 in testing the null hypothesis. Click the icon to view the table. a. What is the null hypothesis? O A. The three age groups have the same mean time. B. The mean time of the second group is larger the mean time of the remaining groups. O C. The mean time of the first group is larger the mean time of the remaining groups. D. The mean time of the third group is larger the mean time of the remaining groups. - X Data table Source of variation SS df MS F P-value F crit Between groups 3432063.284 1716031.642 0.1314 0.8770 3.0804 Within groups 1410875649 108 13063663.417 Total 1414307712 110 View an example Clear all Check answer 8:03 PM arch O 50OF Clear ~ 0 0 9 ( 4 ) 10/8/2022 hp 112 7 insert prt sc delet & 5 6 8 backspace 4 E R O P D F G ente pause X C B M ctri