Ellis is painting the wooden fenceposts in his yard. they are each 7 feet tall and have a diameter of 1 foot. there are 11 fenceposts in all. how much paint will ellis need to paint all the surface of the 11 fenceposts? use 3.14 for pie , and round your answer the nearest hundredth.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

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: