the mean height of the 30 children in a room is 76 cm james whose height is 107 cm went into the room what is the new mean of th
1 answer:
Answer:
The new mean is 77cm
Step-by-step explanation:
If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is
If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm
The new mean now becomes:
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