Answer:
Step-by-step explanation:
Population 1: 11, 7, 9, 12, 13, 15, 15
Population 2: 6, 6, 4, 5, 8, 13, 12
Mean = sum of terms/number of terms
For population 1,
number of terms = 7
Mean = (11 + 7 + 9 + 12 + 13 + 15 + 15)/7 = 82/7 = 11.7
For population 2,
Number of terms = 7
Mean = (6 + 6 + 4 + 5 + 8 + 13 + 12)/7 = 7.71
The difference value for each element is
(11 + 7 + 9 + 12 + 13 + 15 + 15) - (6 + 6 + 4 + 5 + 8 + 13 + 12) = (5, 1, 5, 7, 5, 2, 3)
The difference between the two means is
Mean of population 1 - mean of population 2
Difference = 11.7 - 7.71 = 3.99
