Answer:
31.5
Step-by-step explanation:
Answer:
0.09
Step-by-step explanation:
Let x = ages of mother
x : 22 17 27 20 23 19 24 18 19 24
N = 10
Mean = ∑x/N = 218/10 = 21.8
Difference in mean = 21.8 - 20 = 1.8
If significance level = 5% or 0.05
∴ Rejection region = 1.8 X 0.05 = 0.09
D Rotated perpendicular lines always remain perpendicular lines
the pattern goes as adding 3 then subtracting with 1,
1+3=4
4-1=3
3+3=6
6-1=5
so its like that now we have to continue it like:
5+3=8
8-1=7
so the pattern goes like 1,4,3,6,5,8,7
