Question 1056367
The CI has a SE of z(0.975,1.96)sqrt{(p)(1-p)/n}
=sqrt {(0.4941)(0.5059)/10000}=0.005
1.96*005=0.0098
The CI is {0.4843,0.5099)
There is no evidence that the deaths differed from 0.5, since the CI includes the parameter.
More importantly, there is no evidence that people can temporarily postpone their death, unless they are suicidal or they live in a state where Death with Dignity is allowed.  Because something occurs does not mean that what is postulated as a cause is in fact the cause.