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Twenty students in Class A and 20 students in Class B were asked how many hours they took to prepare for an exam. The data sets represent their answers.
Class A: (2, 5, 7, 6, 4, 3, 8, 7, 4, 5, 7, 6, 3, 5, 4, 2, 4, 6, 3, 5} Class B: {3, 7, 6, 4, 3, 2, 4, 5, 6, 7, 2, 2, 2, 3, 4, 5, 2, 2, 5, 6}
Which statement is true for the data sets?
• A. The mean study time of students in Class A is less than students in Class B
• B. The mean study time of students in Class B is less than students in Class A.
• C. The median study time of students in Class B is greater than students in Class A.
• D. The range of study time of students in Class A is less than students in Class B.
• E. The mean and median study time of students in Class A and Class B is equal.
Sagot :
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