Question

Alg
72 marks is included, calculate the new mean.
9. The mean of marks obtained by 15 students is 63. If marks of two students were read wrongly 73
instead of 78 and 59 instead of 69, find the correct mean.
The mean wages of 216 workers is 79. If one worker left, the mean was calculated again and
10.​

Answer 1

Answer:

9) Given;

The mean of marks obtained 15 students =63

2Students were read - 73 instead of 78 and 59 instead 69.

Marks obtained by 15 students=63*15

=945

=945+15

=960

The correct mean marks of 15 students =960/15

=64

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10) 216*79 = 215*82 + x

x = 216*79 - 215*82

x = 17264 - 17630

x = -366

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION

Answer 2

Answer:

hope so it will helpful to you