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A normal distribution has = 30 and = 5.
Find the z score corresponding to x = 25.

User Li Haoyi
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Final answer:

The z-score corresponding to x = 25 is -1.

Step-by-step explanation:

A z-score represents the number of standard deviations a value is above or below the mean in a normal distribution. To find the z-score corresponding to x = 25 in a normal distribution with a mean of 30 and a standard deviation of 5, we can use the formula:

z = (x - mean) / standard deviation

Plugging in the values, we get:

z = (25 - 30) / 5 = -1

Therefore, the z-score corresponding to x = 25 is -1.

User Mohammad Akbari
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