Answer: I belive its the first one Good Luck
Step-by-step explanation:
1. x=12 i think
2. x=3
3. x=3
i hope this helps
The answer is A.First we substitute 8 into the given equation.
Multiply 8 and 5, then find the square root of 40. Finally multiply it by 10.
Then add 15.
And the answer will be 78.245.
Now the question says that s is in
thousands, so the real answer would be about 75,000.
Answer:
A. The larger the sample size the better.
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:
We have to look at the standard error, which is:
This means that an increase in the sample size reduces the standard error, and thus, the larger the sample size the better, and the correct answer is given by option a.
Answer:-21
Step-by-step explanation: