ABC trucking company realized that on an annual basis that distance traveled is normally distrubuted with a mean of 50,000 miles and a standard deviation of 12,000 HOw many miles will be traveled by at least 80% of the trucks

39896 miles will be traveled by at least 80% of the trucks

Step-by-step explanation:

Given that :

the mean   = 50000

standard deviation   = 12000

we are to calculate how many miles  will be traveled by at least 80% of the trucks.

This implies that :

Likewise;

We all know that

Using the z table to determine the value for (invNorm (0.2)); we have ;

From z tables;

Thus; 39896 miles will be traveled by at least 80% of the trucks

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.