Yesterday morning, at 6:00 AM, water started leaking from a tank at a constant rate. The tank contained 8,496liters of water at 6:42AM, and 8,100liters at 7:15 AM the same day. Assume that no more water is added to the tank. a. Create the equation that relates the amount of water in the tank,,to the time since it started leaking, .
Hint: This will be a linear relationship, so start by finding the slope of the line based on the given information.
Express the final equation in =+form. b.How much water did the tank contain at 9:00 AM that day? Include units!

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: