Suppose the ages of cars driven by employees at a company are normally distributed with a mean of 8 years and a standard deviation of 3.2 ye

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Suppose the ages of cars driven by employees at a company are normally distributed with a mean of 8 years and a standard deviation of 3.2 years. What is the z score of a car that is 6 years old?

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    2021-09-11T09:29:21+00:00

    Z-scores are found using the formula z=(x-\mu) \div\sigma, where x is your data point you’re using, μ is the mean, and σ is the standard deviation.  Using our information we then have
    z=(6-8)\div 3.2=(-2)\div 3.2=-0.625

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