Which statements are true about the median? check all that apply. put the values in numerical order before trying to find the median. median is a number that is much lower or much higher than the rest of the numbers. the median is always greatly impacted by outliers. the median is the number in the middle of an ordered set of values. the median must be calculated by finding the mean of the two middle points when there is an even number of data points.

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: