Answer: 3
Step-by-step explanation:
Given : Standard deviation :
Margin of error :
Significance level :
By using the standard normal table of z ,
Critical value :
The formula we use to find the minimum sample size required :-
i.e.
Hence, the number of lights should we select if we wish to estimate μ to within 5 seats and be 95 percent confident =3
Answer:
The height of the cone is 5.09 inches
Step-by-step explanation:
Given:
The volume of the cone = 12 cubic inches
The diameter of the cone = 3 inches
To Find :
The height of the cone = ?
Solution:
We know that the volume of the cone is
Volume =
where
r is the radius of the cone
h is the height of the cone
Now substituting the given values
h = 5.09 inches