Answer:C
Step-by-step explanation:
π=3.14
diameter=16
Radius=diameter ➗ 2
Radius=16 ➗ 2
Radius=8
Area=π x Radius x Radius
Area=3.14 x 8 x 8
Area=200.96 approximately 201
Answer:
16 half packages.
Step-by-step explanation:
You basically need to add them all of the weight of each ingredients together, and then you multiply by 2.
Answer: Perpendicular sides have a 90 degree angle
Step-by-step explanation:
Answer:
Step-by-step explanation:
In the two independent samples application, it involves the test of hypothesis that is the difference in population means, μ1 - μ2. The null hypothesis is always that there is no difference between groups with respect to means.
Null hypothesis: ∪₁ = ∪₂. where ∪₁ represent the mean of sample 1 and ∪₂ represent the mean of sample 2.
A researcher can hypothesize that the first mean is larger than the second (H1: μ1 > μ2 ), that the first mean is smaller than the second (H1: μ1 < μ2 ), or that the means are different (H1: μ1 ≠ μ2 ). These ae the alternative hypothesis.
Thus for the z test:
if n₁ > 30 and n₂ > 30
z = X₁ - X₂ / {Sp[√(1/n₁ + 1/n₂)]}
where Sp is √{ [(n₁-1)s₁² + (n₂-1)s₂²] / (n₁+n₂-2)}
