Aclimatologist wants to determine the thickness of a glacier with a surface area of about 2 km². he selected 10 locations at random on the glacier and then measured the thickness of the glacier, in meters, at each location. 41, 38, 36, 29, 34, 44, 46, 43, 35, 40 what is the estimated median thickness of the entire glacier? enter your answer in the box.

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: