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Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Icould really use some with this question.

Given a binomial distribution variable with n=20 and p=0.60 find the following possibilities using the binomial table a) p(x < 13) b) p x > 15) c) p(x = 17) d) p(11 < x < 14) e) p(11 < x < 14)