Question
A student enrolled in a degree program takes a total of thirty-two courses, indexed by i = 1 ,..., 32 in order of appearance on
A student enrolled in a degree program takes a total of thirty-two courses, indexed by i= 1,...,32 in order of appearance on the transcript, and also spread evenly over eight semesters. Each course is graded on an Athrough Dscale, and the events Ai, Bi, Ciand Didenote that the student earned the respective grade when taking the ithcourse. (Each course is attempted once only.)
(i)Consider the four events A1, B1, C2and D2. Determine whether each possible pair has empty or nonempty intersection, and draw the four events on a Venn diagram.
(ii) Express the event
E = " GPA for the first semester equals 3.75 "
symbolically in terms of Ai's, Bi's, Ci's and Di's (as appropriate).
(iii) Express the event
F = " no D's are earned in the first two semesters"
symbolically using Di's.
(iv) Express the event
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