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The new mean will be 4 × 59 = 236
Step-by-step explanation:
The mean is originally
( x₁ + x₂ + ... + x₁₂₁ ) / 121 = 59.
Replacing each xₙ by 4xₙ, we get the new mean
( 4x₁ + 4x₂ + ... + 4x₁₂₁ ) / 121
= 4 × (x₁ + x₂ + ... + x₁₂₁ ) / 121
= 4 × (the original mean)
= 4 × 59
= 236
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