Question

An Enumerotan calculate the aver
average height of 50 student out of 300 in a colledge and then he calculates the average height of all 300 student?
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Answer 1

Answer:

The range of the heights of the female students in a certain class is 30 centimeters, and the range of the heights of the male students in the class is 40 centimeters. What is the range of the heights of all the students in the class?

(1) The average (arithmetic mean) height of the male students in the class is 10 centimeters greater than the average height of the female students in the class.

(2) The shortest female student in the class is 15 centimeters shorter than the shortest male student in the class.