A university has 10,000 students of which 45% are male and 55% are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students.
A) Mean = 16.5, Variance = 2.7
B) Mean = 13.5, Variance = 2.7
C) Mean = 16.5, Variance = 7.4
D) Mean = 13.5, Variance = 7.4

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The Answer of A university has 10,000 students of which 45% are male and 55% are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students.
A) Mean = 16.5, Variance = 2.7
B) Mean = 13.5, Variance = 2.7
C) Mean = 16.5, Variance = 7.4
D) Mean = 13.5, Variance = 7.4

A University Has 10,000 Students of Which 45% Are Male