(i)[3]
Find the probability that a randomly selected boy aged 16 years in Jimpuri weighs more than 65 kilograms.
(ii)[4]
For boys aged 16 years in Jimpuri, $25\%$ have a weight between $65$ kilograms and $k$ kilograms, where $k$ is greater than $65$. Find $k$.
(iii)[5]
In Brigrville, the weights, in kilograms, of boys aged 16 years are normally distributed. $99\%$ of the boys weigh less than $97.2$ kilograms and $33\%$ of the boys weigh less than $55.2$ kilograms. Find the mean and standard deviation of the weights of boys aged 16 years in Brigrville.