In DeShawn's statistics class there were three exams. The first was worth 20% of the course grade and DeShawn scored 90. The second was worth 30% and DeShawn scored 80. The third was worth 50% and DeShawn scored 100. What was the weighted mean of DeShawn's exam scores for his course grade?

Weighted mean of DeShawn's exam scores for his course grade=92%

Step-by-step explanation:

Given that in DeShawn's statistics class there were three exams. The first was worth 20% of the course grade and DeShawn scored 90. The second was worth 30% and DeShawn scored 80. The third was worth 50% and DeShawn scored 100.

To find out weight average score of De Shawn

Test           Scores     Worth     ProductI

I                   90             0.2        18

2                  80             0.3        24

3                  100           0.5         50

Total                                           92

Weighted mean of DeShawn's exam scores for his course grade=92%