Questions: When Steve Jobs was Chief Executive Officer (CEO) of Apple, he earned an annual salary of 1. The CEOs of the 50 largest U.S. companies had a mean salary of 1,449,779 and a standard deviation of 527,651 (based on data from USA Today) Convert Steve Jobs' salary to a z score. Round to 2 decimals. z =

Solution Steps

To convert Steve Jobs' salary to a z score, we use the formula for the z score: \[ z = \frac{X - \mu}{\sigma} \] where \( X \) is Steve Jobs' salary, \( \mu \) is the mean salary, and \( \sigma \) is the standard deviation. Plug in the given values and calculate the z score.

We are given:

• Steve Jobs' salary \( X = 1 \)
• Mean salary \( \mu = 1,449,779 \)
• Standard deviation \( \sigma = 527,651 \)

The formula for the z score is: \[ z = \frac{X - \mu}{\sigma} \]

Substitute the given values into the formula: \[ z = \frac{1 - 1,449,779}{527,651} \]

Perform the calculation: \[ z = \frac{-1,449,778}{527,651} \approx -2.7476 \]

Round the z score to 2 decimal places: \[ z \approx -2.75 \]

Final Answer