Answer:
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which 
is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.
In this question:
The narrower C.I. is the 95%, and the wider is the 99%. So
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Answer:
Step-by-step explanation:
r = Radius
h = Height
Volume of cylinder = 
Surface area is given by
Differentiating with respect to radius we get
Equating with zero we get
So, the value of the function is minimum at 
So, the radius and height which would minimize the surface area is 1.05 feet and 2.12 feet respectively.
Surface area
The minimum surface area is .
Answer:
11
Step-by-step explanation:
x+y=8 y=3
x+3=8
-3 -3
x=11
Answer: x = 5
Step-by-step explanation:
Use Pythagorean's Theorem
Lol that’s good to hear I’m glad
