Problem

A normal distribution has mean 65.1 and standard deviation 4.93. Find the data value corresponding to the following value of $z$. \[ z=-0.36 \] The data value corresponding to $z=-0.36$ is (Round to the nearest tenth as needed.)

Solution

Step 1 :We are given a normal distribution with mean \(\mu = 65.1\) and standard deviation \(\sigma = 4.93\). We are asked to find the data value corresponding to the z-score \(z = -0.36\).

Step 2 :The z-score is a measure of how many standard deviations an element is from the mean. The formula for the z-score is \(z = \frac{x - \mu}{\sigma}\), where \(x\) is the data value we are trying to find.

Step 3 :We can rearrange this formula to solve for \(x\): \(x = z \cdot \sigma + \mu\).

Step 4 :Substituting the given values into this formula, we get \(x = -0.36 \cdot 4.93 + 65.1\).

Step 5 :Calculating the above expression, we get \(x = 63.325199999999995\).

Step 6 :Rounding to the nearest tenth as needed, we get \(x = 63.3\).

Step 7 :Final Answer: The data value corresponding to \(z=-0.36\) is \(\boxed{63.3}\).

From Solvely APP
Source: https://solvelyapp.com/problems/IbZ87qoHhi/

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