Question 1153672
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I see that you were able to manage part  b).  You did it right.

It is great and I am glad to see it.  My congratulations (!)    Fine job (!) (!)



I am sure that you can easily complete parts  a)  and  c)  on your own.

For it,  you do not need the tutor's help.  It is  VERY  easy.



To make part d), write all pairs of given weights.

You should have 6 pairs ( 6 = (4*3)/2 ).

Then for each pair calculate the mean (which is half of the sum).

It is extremely easy, again.



Happy calculations (!)