Sorry I’m unable to understand do you want an English translation
Answer:
Follows are the responses to the given question:
Step-by-step explanation:
In point a:
z score for 3:
![= \frac{(3 - 5.3)}{1.1} \\\\ =-2.09](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%283%20-%205.3%29%7D%7B1.1%7D%20%5C%5C%5C%5C%20%3D-2.09)
So,
P(Less than 3.0 mm):
![=P(z < -2.09)\\\\ = 0.0183](https://tex.z-dn.net/?f=%3DP%28z%20%3C%20-2.09%29%5C%5C%5C%5C%20%3D%200.0183)
In point b:
z score for 7:
![= \frac{(7 - 5.3)}{1.1} \\\\= 1.55](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%287%20-%205.3%29%7D%7B1.1%7D%20%5C%5C%5C%5C%3D%201.55)
So,
P(Less than 3.0 mm):
![= P(z > 1.55) \\\\= 0.0611](https://tex.z-dn.net/?f=%3D%20P%28z%20%3E%201.55%29%20%5C%5C%5C%5C%3D%200.0611)
In point C:
P(Between 3 and 7):
I'm not really good at putting them into equations but it would be $20 taken off so it is 5x+75
Solution: x + 50 = 180
X = 130