Use the following information for questions:
The time taken for a computer to boot up, X, follows a normal distribution with mean 30 seconds and standard deviation 5 seconds.
-What is the standardized score (z-score) for a boot-up of time x =35 seconds?
A) -2.0
B) 0.0
C) 1.0
D) 2.0

Question

Use the following information for questions:
 The time taken for a computer to boot up, X, follows a normal distribution with mean 30 seconds and standard deviation 5 seconds.
-What is the standardized score (z-score) for a boot-up of time x =35 seconds?
A) -2.0
B) 0.0
C) 1.0
D) 2.0

Quizplus · Accepted Answer

The z-score is calculated using the formula $z = \frac{x - \mu}{\sigma}$, where $x$ is the value in question, $\mu$ is the mean, and $\sigma$ is the standard deviation. Plugging in the given values, $z = \frac{35 - 30}{5} = 1.0$.

Use the Following Information for Questions