Question 847577
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Hi,
p(note right= .99,  n = 60
P(x=60) = binompdf(60, .99, 60).
P(x=59) = binompdf(60, .99, 59).
P(x=58) = binompdf(60, .99, 58)
P(at least two mistakes) =  1 - binomcdf(60, .01, 1).
P(> 2 mistakes) = binompdf(60, .01, 2).
b. what must be Clara's probability of getting any one note right 
if she wants to have a 95% probability of getting all 60 notes right?
 x^60 = .99
 x = {{{root(60,.99)}}} = .9998  0r 99.98 % probability of correct