What is the first to last in this question 1,450 1,776 1,670 1,483 which one is the smallest and which is the biggest

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

How do you solve a question like this?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.