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Given that mean of a normal variable X is 12 and standard deviation is 4, then find the data point if its Z-score is 5. |
20 16 32 28 |
32 |
The correct answer is Option (3) → 32 Given $μ = 12$ and $σ = 4$ $∵Z = 5$ $∴ 5=\frac{x-μ}{σ}=\frac{x-12}{4}⇒x-12=20$ $⇒x=32$ |
