Find the Z-Score Corresponding to the Given Value and Use $2.1$

Short Answer

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 its z-score is less than -2.00 or greater than 2.00. Round the z-score to the nearest tenth if necessary.
-A weight of 110 pounds among a population having a mean weight of 161 pounds and a standard deviation of 24.3 pounds. A) -2.1; unusual
B) $2.1$ ; not unusual
C) $- 51.0$ ; unusual
D) -2.1; not unusual