Questions: Calculate the standard score of the given X value, X=49.3, where μ=48 and σ=43.8 and indicate on the curve where z will be located. Round the standard score to two decimal places.

Calculate the standard score of the given X value, X=49.3, where μ=48 and σ=43.8 and indicate on the curve where z will be located. Round the standard score to two decimal places.
Transcript text: Calculate the standard score of the given $X$ value, $X=49.3$, where $\mu=48$ and $\sigma=43.8$ and indicate on the curve where $z$ will be located. Round the standard score to two decimal places.
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Solution

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Solution Steps

Step 1: Identify the given values

The problem provides the following values:

  • \( X = 49.3 \)
  • \( \mu = 48 \)
  • \( \sigma = 43.8 \)
Step 2: Use the standard score formula

The standard score (z-score) formula is: \[ z = \frac{X - \mu}{\sigma} \]

Step 3: Substitute the given values into the formula

Substitute \( X = 49.3 \), \( \mu = 48 \), and \( \sigma = 43.8 \) into the formula: \[ z = \frac{49.3 - 48}{43.8} \]

Step 4: Calculate the z-score

Perform the calculation: \[ z = \frac{1.3}{43.8} \approx 0.03 \]

Final Answer

The standard score (z-score) is approximately \( 0.03 \).

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