Answer:
a) 28
b)
Class Limits Class Boundaries Midpoint f Rf Cf
10 - 37 9.5-37.5 23.5 7 0.096 7
38 - 65 37.5-65.5 51.5 25 0.342 32
66 - 93 65.5-93.5 79.5 26 0.356 58
94 - 121 93.5-121.5 107.5 9 0.123 67
122 - 149 121.5-149.5 135.5 5 0.068 72
150 - 177 149.5-177.5 163.5 0 0.0 72
178 - 205 177.5-20.5 191.5 1 0.014 73
Total 73 1.0
c)
The histogram is in attached file.
Step-by-step explanation:
a)
The width of class interval=range/desired number of classes
The width of class interval=(maximum-minimum)/7
The width of class interval=(200-10)/7
The width of class interval=190/7
The width of class interval=27.14=28 (rounded to next whole number)
Part(b) and part (c) is explained in attached word document.
