Answer :
Final answer:
The mean weight of 27 students is 163.33 kg.
Explanation:
To find the mean of 27 students, we need to calculate the total weight of all the students and divide it by the total number of students.
The total weight of the 15 boys is 162 kg * 15 = 2430 kg.
The total weight of the 12 girls is 165 kg * 12 = 1980 kg. The total weight of all the students is 2430 kg + 1980 kg = 4410 kg.
The mean weight of the 27 students is 4410 kg / 27 = 163.33 kg.
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