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Statistics · 2021 · 27 Aug · Shift 2

1 Mathematics questions from this JEE Main paper
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Statistics · 2021 · 27 Aug · Shift 2

1 Mathematics questions from this JEE Main paper

  1. Q40.An online exam is attempted by 50 candidates out of which 20 are boys. The average marks obtained by boys is 12 with a variance 2. The variance of marks obtained by 30 girls is also 2. The average marks of all 50 candidates is 15. If μ…
    Mathematics · Statistics · Numerical