need all steps to work the problem and the interpretation. please .

Homework Axigument 15 [due by 11:59pm CST on Sunday, March 1y) MEup :DY CHIN & CHOS to finish the hamback aairmencut. You can find out more guidance and answers in textbook Chapin Exercises and wickly materials o Blackboard, Alan please FuniLiar with Table 7.1 Confidence Levels and Correagankling 2 value: (T 218) Manse round up results using 2 decimal places Problem wet 1. The the following haifa to answer questions 1-3 (10 points) Standard Dan utica N Lower Plaza 201 Winking class 13.01 1 55 576 Mubible class 14.94 256 CJGET CLASS 16 44 17.33 The 2020 G5S provides these statistics show for the average years of education for lower- workmu-, middle-, and upper class respondente and their associated standard deviation J. Canstruct the 90%% confidence interval for the mean mumber of years of education for Jower class and candle-ckas remembers (10 pears I 2. Ourshut the 97% confidence interval for the mean moba of yag of cumration for Tower class and muddle-class respondents (to pay 3 As MY confidence in the result increases, how does the sips of the confidence interval change? Explain why dus is so (10 pea).Homework Assignment #5 (due by 11:59pm CST on Sunday, March 13#) Please study CHOT & CHOS to finish this homework assignment. You can find out more guidance and answers in textbook Chapter Exercises and weekly materials on Blackboard. Also, please familiar with Table 7.1 Confidence Levels and Corresponding Z values (P. 218). Please round up results nsing 2 decimal places. Problem set 1: Use the following data to answer questions 1-3 (30 points): Mean Standard Deviation N Lower class 12.11 2.93 196 Working class 13.01 2.85 576 Middle class 14 99 2.62 256 Upper class 15.44 2.33 64 The 2020 GSS provides these statistics above for the average years of education for lower-, working-, middle-, and upper-class respondents and their associated standard deviations. 1. Construct the 90% confidence interval for the mean mumber of years of education for lower-class and middle-class respondents (10 pts)? 2. Construct the 95% confidence interval for the mean member of years of echication for lower-class and middle class respondents (10 pts]? 3. As our confidence in the result increases. how does the size of the confidence interval changed Explain why this is so (10 pls)