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A data set that is normally distributed has a mean of 128 and standard deviation of 6.2. What is the Z-score,
rounded to the nearest hundredth, for a data value of 143

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mhanifa

Answer:

  • 2.42

Step-by-step explanation:

Given:

  • μ = 128
  • σ = 6.2
  • x = 143

Z-score is:

  • z = (x - μ)/σ = (143 - 128)/6.2 ≈ 2.42 (rounded to the nearest hundredth)

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