Answer:
Option d (7.84 or less) is the right alternative.
Step-by-step explanation:
Given:
Random sample,
The level of significance,
= 0.95
or,
hence,
The margin of error will be:
⇒
By putting the values, we get
For 3am and 3pm it would be 3:15 as a quarter past 3
We know the yint, so lets find the slope. (0,-12) and (8,-2) -2--12/8-0 or 10/8 or 1.25
So, the slope is 1.25
The answer is y=1.25x-12