Find the Z-Score Corresponding to the Given Value and Use

Multiple Choice

Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual. Consider a score to be unusual if it is at least three standard deviations above or Below the mean. Round the z-score to one decimal place, if necessary. A weight of 238 pounds among a population having a mean weight of 162 pounds and a standard
Deviation of 25.3 pounds.

A) 75.9; unusual
B) 3; not unusual
C) -3; not unusual
D) 3; unusual