3. The weights of packages that arrive at a factory are normally distributed with a mean of 18 kg and a standard deviation of 5.4 kg
- Find the probability that a randomly selected package weighs less than 10 kg
The heaviest 15\% of packages are moved around the factory by Jemima using a forklift truck.
- Find the weight, in kg , of the lightest of these packages that Jemima will move.
One of the packages not moved by Jemima is selected at random.
- Find the probability that it weighs more than 18 kg
A delivery of 4 packages is made to the factory. The weights of the packages are independent.
- Find the probability that exactly 2 of them will be moved by Jemima.