The volume, $V$ ml, of a standard canister is modeled by a normal distribution with a mean of $450.5$ and a standard deviation of $2.4$.

Find the probability that a randomly selected canister contains exactly $450.5$ ml of coolant.

Find the probability that a randomly selected canister contains more than $448.0$ ml.

The mass, $M$ grams, of the active chemical concentrate in a batch is modeled by a normal distribution with mean $\mu$ and standard deviation $\sigma$.

Given that $P(M<215.5)=0.85$, show that

where the constant is given to three decimal places. Fully justify your answer.

Given further that $P(M<202.0)=0.08$, find the values of $\mu$ and $\sigma$.