Answer:
120 students don't have social media accounts
Step-by-step explanation:
Whether the sample is representative:
Estimate: 
Hope this helps
Hey! On the back of the book, there are pages that should start with the letter R. All of those pages are the answers for the ODD problems. Let me know if this helps!
The y-intercept would be 20 because -7(-3)=21-1=20
Hello there!
For questions like these, I always like to translate the figure in my head or on paper so I can get a visual of what is going on.
Take answer A, and translate the figure in your head 1 unit to the left, and then rotate it 180 degrees counterclockwise about the origin. This happens to be the correct answer so we don't have to investigate the others.
This means the answer is A.
Remember that when you move the figure one unit left, it becomes 1 unit away from the x-axis, so the figure must STAY that way during a rotation about the origin.
I really hope this helps!
Best wishes :)
Well, since the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%, that means there is a 90% confidence interval. 9 / 10 = .90 = 90% 90% = 1.645 1.645 * .9 = 1.4805 Margin of Error - 1.4805and The margin of error is the distance from x-bar, the center of the confidence interval ,to the end of the interval. This distance is 6% of 80% which is given by: 80×6100=4.8 Therefore the margin of error is 4.8% and the confidence interval is: ({80 - 4.8}%, {80 + 4.8}%)
