mathematics

class Jim Class Boun Frequ Enter 20 - 22 19.5 - 22.5 23 - 25 22.5 - 25.5 Shift 26 - 28 25.5 - 28.5 29 - 3 1 28.5 - 31.5 32 - 34 31.5 - 34.5 35 - 37 34:5- 37.5 Does the distribution to be normal ( yes or no ) 30 Excplain Realative Fre Cummulative mid Points Freq 4/ 30 = 0- 13 (20+ 22 7 / 2= 21 57/ 30 = 0.16 4+ 5 = 8 21 + 3 = 24 5/ 30 = 0.16 9+ 5 = 14 24 + 3: 27 3/ 30 = 0. 1 14+ 3 = 17 27 + 3 = 30 8 /. 30 = 0.26 17+ 8 = 25 30 + 3 = 33 5/30 = 0.16 25 +5 = 30 33 + 3= 36