Answer:



Step-by-step explanation:
For this case we have a confidence interval given as a percent:

If we express this in terms of fraction we have this:

We know that the confidence interval for the true proportion is given by:

And thats equivalent to:

We can estimate the estimated proportion like this:

And the margin of error can be estimaed using the fact that the confidence interval is symmetrical

And then the confidence interval in the form desired is:

The answer is 11 because they need 857 total points and they already have 167 points so what you do is 857-167=710 then 710 divided by 69=11
Answer: A.
Step-by-step explanation:
Plot the y-intercept (0,-1) and use the slope of 1/4 to find a second point
Answer:just hart me n I will help
Step-by-step explanation: