Answer:
a) See step by Step explanation
b) z(s) = 48.88
c) We reject H₀. The sample is not representative of American Adult Population
Step-by-step explanation:
From sample
sample mean . x = 49.28
sample standard deviationn s = 17.21
sample size n₁ = 4857
Population mean according to Census data
μ = 37.2
a) Test Hypothesis
Null Hypothesis . H₀ . x = μ = 37.2
Alternative Hypothesis Hₐ . x ≠ μ
b) We have sample size (4857) we can use normal distribution
z (c) for α = 0.01 α/2 . = 0.005 is from z-table . z(c) = 2.575
To calculate z(s) = ( x - μ ) / s /√n
z(s) = 12.08 * √4857 / 17.21
z(s) = 12.08* 69.64 / 17.21
z(s) = 48.88
z(s) > z(c)
We should reject H₀. The sample is not representative of American Adult population
Answer: I think it’s 4.7= r divided by 5
Step-by-step explanation: I got nothing
Idk how to solve it
Answer:
50 tons
Step-by-step explanation:
because you just divide 6250 by 125
Answer:
The equation for the area of a triangle is b*h/2
Step-by-step explanation:
You take the base of a triangle (b) and multiply it by its height (h). You then divide the product by 2 and you should have your answer.
Answer:
I don't understand the question myself
