Answer:
H0 : μ ≥ 350
H1 : μ < 350
Step-by-step explanation:
It is claimed that the mean is atleast 350 psi ;
10 such pipes were experimentally sampled ;
Here, the null hypothesis is the claim ; this means that the alternative hypothesis will be the opposite of the claim.
The hypothesis
H0 : μ ≥ 350
H1 : μ < 350
I think it's x^4.
(Honestly, I feel 90% positive of this answer, so maybe just get one more opinion!)
Answer:
9.5 in
Step-by-step explanation:
The receiver is placed at the focus of the parabola at a distance of 1/4a from the vertex. Here that would be 1/(4*(1/38)) or 38/4 inches or 9.5 in
Answer:
A=342 ft^2 (dark section)
A = 108 ft^2 (light section)
Step-by-step explanation:
18 x 25 = 450
9 x 12 = 108
450-108= 342
