Type the correct answer in each box. 4.
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The graph shown is not a function because points (-1, 2) and (
) have the same x-value.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in: