Solution: We are given:

Let
be the weight (oz) of laptop
We have to find 
To find the this probability, we need to find the z score value.
The z score is given below:



Now, we have to find 
Using the standard normal table, we have:

0.9236 or 92.36% of laptops are overweight
Slope: (y2-y1)/(x2-x1)
(6-8)/(4-2) = -2/2 = -1
The slope is -1
Step-by-step explanation:
To find how many people lived outside of the country we subtract:
3.853 ×
- 1.114 ×
= 3.7146 ×
To find the percentage of people living inside the country, we divide:
percent or 2.89%. Which is extremely small.
Similarities: same atomic number
Differences: they have a different number of neutrons