The scores for 21 students on an exam are summarized in the stemplot below. The teacher realizes that a mistake was made and the student whose score was recorded as 49% should have been 94%. If the mistake is corrected, what effect will this have on the mean and median scores? Exam Scores 4. 9 O The mean and median will both increase. O Neither the mean nor the median will change. O The mean will increase but the median will decrease. The mean will increase but the median will be unchanged. 5 О) Ол 6 1 9 7 1 2 5 5 6 7 8. 0 1 2 4 5 5 699 9 0 1 4 7 Key: 9|0 = 90% on the exam