Answer:
See explanation
Step-by-step explanation:

By the distributive property this is equal to:

Hope this helps!
Answer:

Step-by-step explanation:
Given:

We want to find the value of
.

Those are the ranges for one tandard deviation below the mean and one standard deviation above the mean, and we know that 68% of the data falls in that range, so the probability that a randomly chosen worker makes that much is 68%
Intersects a given segment at a 90 degree angle,and passes through the given segment's midpoint.
Answer:
,
,
, 
Step-by-step explanation:
1880:
The predicted value is:


The residual value is:


1920:
The predicted value is:


The residual value is:

