Question:

Determine the significant difference in the level of customer satisfaction between Shopee and Lazada through t-test and interpret the data if it is significant or not. Also, determine the computed value and the critical value or p-value

Significance level: 0.05

Given:

TALLY OF DATA What is the level of customer satisfaction in Shopee? Lazada? Efficiency in delivering Pace of delivery Item prices (including item shipping) SHOPEE 1 2 3 4 5 Total 1 2 3 4 5 Total 1 2 4 5 Total 0 0 10 25 15 50 0 0 5 26 19 1 1 8 14 26 50 LAZADA 1 2 3 4 5 Total 1 2 3 4 Total 1 2 3 4 5 Total 0 8 16 16 10 50 1 6 15 22 6 50 4 8 22 9 7 50 Interval in determining the description 4.21 - 5.00 Totally Satisfied 3.41 - 4.20 Satisfied 2.61 - 3.40 Neutral 1.81 - 2.60 Not Satisfied 1.00 - 1.80 Totally Not Satisfied Solution: SHOPEE Efficiency: 1(0) + 2(0) + 3(10) + 4(25) + 5(15) = 205 = 4.1 (Satisfied) 50 50 Pace: 1(0) + 2(0) + 3(5) + 4(26) + 5(19) = 214 = 4.28 (Totally Satisfied) 50 50 Item price 1(1) + 2(1) + 3(8) + 4(14) + 5(26) = 211 = 4.26 (Totally Satisfied) 50 50 Overall Weighted Mean = 4.1 +4.28 + 4.26 = 4.21 (Totally Satisfied) 3 LAZADA Efficiency: 1(0) + 2(8) + 3(16) + 4(16) + 5(10) = 178 = 3.56 (Satisfied) 50 50 Pace: 1(1) + 2(6) + 3(15) + 4(22) +5(6) = 176 = 3.52 (Satisfied) 50 50 Item price 1(4) + 2(8) + 3(22) + 4(9) + 5(7) = 157 = 3.14 (Neutral) 50 50 Overall Weighted Mean = 3.56 + 3.52 + 3.14 =3.41 (Satisfied) 3 Which is better in terms of: Which is mostly preferred online shop? Performance Shopee % Lazada % Shopee % Lazada % Efficiency in delivering 46 92% 4 8% 45 90% 5 10% Pace in delivering items 45 90% 5 10% Item prices 45 90% 5 10%