What is the value of the following function when x = 0? On a coordinate plane, a graph of a function intersects the x-axis at (negative 2, 0) and (1.25, 0). The function intersects the y-axis at (0, negative 2). The vertex is at (negative 1, negative 5).
y = negative 5
y = negative 2
y = negative 1
y = 0

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: