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JEE Main Math Class 12 Statistics Part 1 Questions

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Question : 101

Total: 115

A scientist is weighing each of 30 fishes. Their mean weight worked out is 30 gm and a standarion deviation of 2 gm. Later, it was found that the measuring scale was misaligned and always under reported every fish weight by 2 gm. The correct mean and standard deviation (in gm) of fishes are respectively :

32, 2
32, 4
28, 2
28, 4

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