Question: Let us derive more explicitly an example of point masses in the limit of nth order statistics for uniform variables. Consider the i.i.d. distribution (X1,

Let us derive more explicitly an example of point
Let us derive more explicitly an example of point masses in the limit of nth order statistics for uniform variables. Consider the i.i.d. distribution (X1, . . . ,Xn) where each X; N U [0, 1]. It is simple to see, generalizing from the case where n = 5 that Prof. Ellison computed, that the pdf of the nth order statistic Y = max (X1 , . . . , X\") is fy (y) = ny"'1. Now we are interested in the behavior of fl, (3;) in the limit to ) oo (read: \"n goes to positive innity\"). We can nd this by considering two regions in the support ofy (which is [0, 1]}. One is the region [0, 1) (Le. excluding y = 1 }, and second is the single point 'region' 3; = 1. For the rst region, for any fixed 1; E [0, 1), y\"'1 goes to 0 as n > 00. More over it actually tends to 0 "faster\" than n tends to 00 (this can be shown by L'Hospital's rule, but is outside the scope of this course!). Therefore for y E [0, 1), f9. = n a: gun1 l- 0 in the limit in ) oo; in other words, for this region the pdf tends to 0 for this region! Question 2 0.0\" .0 point (graded) Please ll in the blank for y = 1. For the second. single point "region" 11; = 1, where does I}, = n t y\"_1 tend to? Simplify and express your answer in terms of n. Submit You have used 0 of 2 attempts Save Just for fun: Draw out fy (y) for all y E [0, 1] in the limit In > 00. Do you see why we say these are "point masses in the limit" of nth order statistics? Discuss below

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