Answer :
Answer:
8.5
Faster than Normal
Explanation:
Charlene Brewster normal time for the operation will be calculated by taking average of times.
( 8.4 + 8.6 + 8.3 + 8.5 + 8.7 + 8.5 ) / 6
= 8.5
The normal time will be calculate by dividing the Charlene Brewster time by performance rating
8.5 / 110% = 7.7
The Charlene work performance is rated as faster than the normal time.
Charlene Brewster is a fast man. Their are outcomes of his performances given with time in seconds.
The normal time taken for operation by Charlene Brewster will be calculated by taking the average of all the times.
Calculations
[tex]\begin{aligned}\rm Normal\:Time \:Taken&=\rm \dfrac{All\:outcomes\:of\:Time}{Number\:of\:Outcomes}\\ \\\rm Normal\:Time \:Taken&=\dfrac{8.3+8.4+8.5+8.5+8.6+8.7}{6} \\\\\rm Normal\:Time \:Taken&=\dfrac{51}{6} \\\\\rm Normal\:Time \:Taken&= 8.5 seconds.\end[/tex]
Therefore normal time will be calculated by dividing average performance time by performance rating.
[tex]\begin{aligned} \rm Time \:taken &=\rm \dfrac{Average\:time}{Performance\:rating} \times 100\\ \\\rm Time \:taken &= \dfrac{8.5}{110} \times 100\\\\\rm Time \:taken &= 7.72\end[/tex]
Therefore, Based on the normal time and the observed times, Charlene's work performance should be rated as faster than normal time.
Learn more about average here:
brainly.com/question/19136062