The screws to be used on a building construction have an average length of 20 cm with Std Dev of 0.9 cm, following a Normal Distribution. The specifications for the minimum and maximum lengths are...

The screws to be used on a building construction have an average length of 20 cm with
Std Dev of 0.9 cm, following a Normal Distribution.
The specifications for the minimum and maximum lengths are 17.5 cm and 23 cm
respectively. If a batch of 100,000 screws is received, how many would be accepted
because they are inside the specifications?