Suppose a sample of 60 cans of soda has a mean of 12.1 ounces and a standard deviation of 0.05 ounces.If a can of soda has 12 ounces, what is its corresponding z score?
A)2.0
B)-2.0
C)1.8
D)-3.0
E)-1.8

Question

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: $z = \frac{(12 - 12.1)}{0.05} = -2.0$.

Suppose a Sample of 60 Cans of Soda Has a Mean