The Student Puzzle Corner contains one or two problems in statistics or probability. Sometimes, solving the problems may require a literature search. Current student members of the IMS are invited to submit solutions electronically (to bulletin@imstat.org with subject “Student Puzzle Corner”). The deadline has now been extended to June 18,…

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Anirban DasGupta writes: Well done to Yixin Wang (Columbia University) and Vivian Meng (McGill University), who provided correct solutions to the various parts of the problem. Yixin Wang Vivian Meng The problem asked was the following: suppose $X_1,X_2,\cdots ,X_n$ are iid $N(\mu ,{\sigma }^2)$ where the…

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The Student Puzzle Corner contains one or two problems in statistics or probability. Sometimes, solving the problems may require a literature search. Current student members of the IMS are invited to submit solutions electronically (to bulletin@imstat.org with subject “Student Puzzle Corner”). The deadline is March 5, 2015. The names and …

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The problem, stated here, was the following: what is an exact expression for the singularity probability $f(p)$ of a $3\times 3$ random matrix with iid Rademacher entries having the distribution $P(1)=p,P(-1)=1-p$, to find its average over $p$, and to show that it is minimized…

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The Student Puzzle Corner contains one or two problems in statistics or probability. Sometimes, solving the problems may require a literature search. Current student members of the IMS are invited to submit solutions electronically (to bulletin@imstat.org with subject “Student Puzzle Corner”). The deadline is January 15, 2015. The names and …

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