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sergejj [24]
2 years ago
6

The mean weight 20 students in a room is 65 kg one student one student who weight is 88kg went into the room what is the new mea

n of the weight of the students in the room round to nearest kilogram.
Mathematics
1 answer:
umka2103 [35]2 years ago
6 0

The new mean is 66.09

<u>Explanation:</u>

Mean weight of 20 students = 65kg

One student with 88kg entered the room.

New mean = ?

\frac{x_1+x_2+....+x_2_0}{20} = 65

\frac{x_1+x_2+....+x_2_0 + 88}{21} = ?

The above equation can further be written as:

x_1 + x_2 +....+x_2_0 = 65 X 20\\\\x_1 + x_2 +....+x_2_0 = 1300

New mean = \frac{1300 + 88}{21}

                 = 66.09

Therefore, the new mean is 66.09

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Now we remove 5 to the other side of the equation

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