Question: 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 hundredth if necessary.

The weight of a 280 pound person among a population having a mean weight of 167 pounds and a standard deviation of 23.1 pounds. Compute the z-score for this data value and state whether it is usual or unusual and why