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

Question

3 years ago

6

n of the weight of the students in the room round to nearest kilogram.

1 answer:

umka2103 [35] · Answer 1 · 2022-08-21T06:59:32+03:00

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