Neco Model Questions Vol1 2024 Mathematics Question 4
Practice objective / multiple choice question 4 from the 2024 Neco Model Questions Vol1 Mathematics examination.
In a class of 30 students, the mean score on Exam 1 is \(68\) with a standard deviation of \(8\). The mean score on Exam 2 is \(74\) with a standard deviation of \(6\). The correlation coefficient between the two exam scores is \(0.6\). Find the mean and the standard deviation of the total score (sum of the two exam scores) for the class. Give the standard deviation to two decimal places.
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About This Question
This is Neco Model Questions Vol1 2024 Mathematics Question 4. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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