Question

The following data give the number of hours 7 students spent studying and their corresponding grades on their midterm exams. Hours Studying 0.5 0.5 1 2 2 2.5 4 Midterm Grades 66 78 78 86 90 95 99 Copy Da ev Step 1 of 5: Calculate the sum of squared errors (SSE). Use the values bo = 69.7311 and b = 8.3106 for the calculations. Round your answer to three decimal places. Answer/How to Enter) 4 Points Keypa

Answer 1

Answers Given hours - 7 no of and b. = 8.3106 bo 569.7311 ŷ = botbix Regression equation is ŷ - 69.7311 + 8.3106 X» House studying Y midterm goades Y Y 69.731178.3106* U-ýja 73.8864 62.1953 22 0.566 O'25 0:25 0.5 78 73.8864 78.0417 4 2. 78 86 2 90 2.595 u 99 863523 86.3523 90.soz6 1029735 18.9217 0.00174 0:12411 13.3057 20:1816 15.7887 4 6:25 16 above table Ex= 12.5 EC4 - 23.128.51885 E 2=31.75 1) sum ୧୪୪ ୦୪s s.se = E(Y-92 = E(Y-9)2 =128.51885 N128.519 of squares

errors s2) variance OR 2) Estimated n.7 128.519 SSE - 25.7038 7-2 variance of 3) Estimated slope s, i 28.7038 shi 5² Sea Sax Sxx E22_ CE 272 (12:5)? = 31.25 sxx 19.42857 25.7038 2.7262 Š 9.42857 shi 2.726 ५ ) interval for bio 99% confidence XSbi be I +212,0-2 df = 7-2=5 2 Ic099 - 0:01 tc = 3.365 Cloomat-table)

c-I = 8.3106 + 3.365 2.726 CI - 8.3106+ 5.5558 C.1=(2.7548, 13.8664) 5) 95% confidence interval Sbi Tower endpoint = 2.755 end point -13.866 Upper n-2 C.Is bit tainer Df = 7-2= 5;281-0.95 -0.05 tca 2.015 C.I=8.3106+ 2.015 V2.726 CI-8.31064 3.3269 coIS (419837, 11:6375) lower end point = 4.9837 upper endpoints 11.6375