STATISTICAL ANALYSIS (note: dont mind the answer hole there still no answer)

The lengths of fifty (50) power failure, in minutes, are summarized in the given frequency distribution table. Class Limits Class Boundary Class Mark Frequency (X) Fdown (f) Fup 13 33 12.5 33.5 23 10 10 50 34 54 33.5 54.5 44 3 13 40 55 75 54.5 75.5 65 10 23 37 76 96 75.5 96.5 86 9 32 27 97 117 96.5 117.5 107 7 39 18 118 138 117.5 138.5 128 9 48 11 139 159 138.5 159.5 149 2 50 2 What is the class width? * 1 point O 7 20 21 O 50