Question 1199637
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<pre>

(a)  {{{1/2^4}}} = {{{1/16}}}.



(b)  1 - {{{1/2^4}}} = {{{1 - 1/16}}} = {{{15/16}}}.    

     Event (b) is the complement to event (a).
</pre>

Solved.



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Usually, in such problems, decimal presentation of the answer is NOT required,
because the formula presentations demonstrates understanding.


But if your teacher requires decimal presentation, you can do it on your own.



Correct rounding is not the right subject in teaching such problems.



Under the right educational curriculum/paradigm, &nbsp;correct rounding is a pre-requisite, 
which should be elaborate &nbsp;YEARS &nbsp;BEFORE &nbsp;a student starts solving such problems.