5 Lengths of a certain type of carrot have a normal distribution with mean 14.2 cm and standard deviation 3.6 cm .
- \(8 \%\) of carrots are shorter than \(c \mathrm {~cm}\). Find the value of \(c\).
- Rebekah picks 7 carrots at random. Find the probability that at least 2 of them have lengths between 15 and 16 cm .