Answer:
±4
Step-by-step explanation:
The margin of error in a confidence interval is half the range:
(84 - 76) / 2 = 4
So the margin of error is ±4.
(-1,1.5) because you add both ys and both xs then divide by two to find the middle
Answer: 6
The factors of 6 are 1,2,3 and 6
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hope this helps :)