Answer:
The standard error of a proportion p in a sample of size n is given by: 
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean 
and standard deviation 
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation 
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean 
and standard deviation
In this question:
The standard error of a proportion p in a sample of size n is given by:
In order to solve this you need to factor the denominator.
x^2 +4x - 12
I see that 12 is a product of 6 and 2 and 4 and 3 and 1 and 12.
I pick the two products that, when added together, give me the 4x term.
Here it's 6 and two I just need to make one of them a negative.
now put them in this form:
(x + 6)(x-2)
In the fraction I see that there is an x-2 in the numerator. This can cancel out with the x-2 in the denominator. Now you have 1/x-6 but remember you can never have a zero in the denominator so x can't equal -6.
And you're done!
F.
Step-by-step explanation:
sorry i gusstn guesst it
Answer:
8. 
11. 
Step-by-step explanation:
Area = 
r = d/2
= 3.14
8.
r = 10/2
r = 5 in
Area = 
Area =
10.
r = 6/2
r = 3 m
Area =
Area =
Hope it helps! (:
1. 6x-15
2. 18x-55
3. 7.2x+2.3y-2
