Neco 2018 Mathematics Question 19
Practice objective / multiple choice question 19 from the 2018 Neco Mathematics examination.
A class of 20 students has a mean score of 68 and a standard deviation of 5. After 5 new students join the class, the overall mean becomes 70 and the new standard deviation becomes 6. Assuming that all five new students obtained the same score, determine that common score.
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About This Question
This is Neco 2018 Mathematics Question 19. It is one of the objective questions from the 2018 Neco Mathematics examination.
Difficulty level: Hard .
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