Question: this was my answer and work for number 4. 4) Actual average of weights : add up all the weight divide by total # of

this was my answer and work for number 4.

4) Actual average of weights : add up all the weight divide by total # of observations (18x2) + (19 x3) + (20*6) + (21x4)+ (22*1)+(23 x 1) + (27*2) + ( 28 x1) = 36+ 57+ 120+ 84+ 22+ 23+54+28= 424= 21.2 20 grams

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