Answer:
Step-by-step explanation:
Given : Sample size : n= 25
Degree of freedom : n-1 = 24
Significance for 95% confidence =
Sample variance :
We assume that the population of all cylindrical engine part outside diameters that would be produced by the new machine is normally distributed
Using chi-square distribution table , Critical values are:
Confidence interval for variance is given by:-
∴ 95% confidence interval for variance :
Answer:
5
Step-by-step explanation:
substitute the given values for p and q into the expression
= = = 5
Answer:
Brad needs 37.68 ft of plastic edging to enclose the flower garden, in terms of "pi" it is 12π only.
Step-by-step explanation:
Given:
Diameter of the circular flower garden = 12 ft
We have to find the measure of the plastic edging Brad need to have.
So,
We have to find the length of the edge of the circular garden for circular object the measure of its length has a special name we call it circumference.
And it is very well known to us that:
For any circle the ratio of its circumference and its diameter is equivalent to pie (π) which is equal to 3.14
Then,
⇒
In the above question we have to find the measure of its circumference.
⇒
⇒
⇒ ft
⇒ Or
⇒
⇒ ft
Brad needs 37.68 ft of plastic edging to enclose the flower garden, in terms of "pi" it is 12π only.
x = 6
you have to work out the problem and what ever you do to one side, you do to the other