Mathematics · Statistics
The average weight of 40 students in a class is 32 kg, and the standard deviation of their weights is 5 kg. If a teacher weighing 73 kg joins the group, what will be the approximate new standard deviation of the 41 members?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110.2 kg
- 28.1 kg✓
- 36.3 kg
- 47.5 kg
Correct answer
8.1 kg
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