question archive The mark of a student in the final exam is a random variable with expectation 75 and variance 9 Determine the following probabilities: (a) A randomly chosen student scores 90 or more (b) The average mark of a class of 100 students is over 80 (c) A randomly chosen student in a class of 100 students gets a mark above the average mark of the 100 students
The mark of a student in the final exam is a random variable with expectation 75 and variance 9 Determine the following probabilities: (a) A randomly chosen student scores 90 or more (b) The average mark of a class of 100 students is over 80 (c) A randomly chosen student in a class of 100 students gets a mark above the average mark of the 100 students
Subject:StatisticsPrice: Bought3
The mark of a student in the final exam is a random variable with expectation 75 and
variance 9 Determine the following probabilities:
(a) A randomly chosen student scores 90 or more
(b) The average mark of a class of 100 students is over 80
(c) A randomly chosen student in a class of 100 students gets a mark above the average mark of the 100 students
