\(\mu = 30\), \(\sigma = 5\), \(x =25\).

We use the formula for normal distribution:

\(z = \frac{x-\mu}{\sigma}\)

\(z=\frac{25-30}{5}\)

\(z=-1.0\)

The z score corresponding to \(x = 25\) for normal distribution with \(\mu = 30\), \(\sigma =5\) is -1.0.

We use the formula for normal distribution:

\(z = \frac{x-\mu}{\sigma}\)

\(z=\frac{25-30}{5}\)

\(z=-1.0\)

The z score corresponding to \(x = 25\) for normal distribution with \(\mu = 30\), \(\sigma =5\) is -1.0.