Being timed
a coordinate grid with a line labeled y equals startfraction 2 over 5 endfraction x minus 5 passing through the points (negative 5, negative 7) and (0, negative 5)
fiona wrote the linear equation y = y equals startfraction 2 over 5 endfraction x minus 5.x – 5. when henry wrote his equation, they discovered that his equation had all the same solutions as fiona’s. which equation could be henry’s?

x – x minus startfraction 5 over 4 endfraction y equals startfraction 25 over 4 endfraction. y =
x – x minus startfraction 5 over 2 endfraction y equals startfraction 25 over 4 endfraction. y =
x – x minus startfraction 5 over 4 endfraction y equals startfraction 25 over 2 endfraction. y =
x – x minus startfraction 5 over 2 endfraction y equals startfraction 25 over 2 endfraction. y =

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: