Answer:
They wore animal skins for clothing
Step-by-step explanation:
they were animal skins for clothing
Third option
is the correct answer.
0.101
Given that :
Standard deviation, s = 0.2
Sample variance, s² = 0.0653
Sample size, n = 10
Population variance = σ² = 0.04
We use the Chi square distribution :
(n - 1)s² / σ²
For P(s² ≥ 0.065)
(n - 1)s² / σ² = (10 - 1)*0.0653 / 0.04
(n - 1)s² / σ² = 0.585 / 0.04 = 14.625
P(s² ≥ 14.625) = 0.101 ( chi squee calculator).
2x - 12 + 6 = 4x - 4
2x- 6 = 4x - 4
-6 +4 = 4x - 2x
-2 = 2x
x= -2/2
x = -1
