Answer:
The answer is below
Step-by-step explanation:
a) Given that the number of sample (n) = 300, therefore since n > 30, the distribution of the sample means is going to be normally distributed.
b) The mean of the distribution of sample means (also known as the Expected value of M) is equal to the population mean μ.
c) The standard deviation of the distribution of sample means is called the Standard Error of M, it is given by:
Sqrt(80) = Sqrt(16) x sqrt(5)
= 4 x sqrt(5)
Answer:
Second option: 
Third option: 
Fifth option: 
Step-by-step explanation:
By definition, a perfect square trinomial can be obtained by squaring binomials.
Then:
Knowing this, to obtain a perfect square trinomial, the binomials that you multiply must be equals.
Therefore, the products result in a perfect square trinomial are:
625,087,435
600,000,000 + 20,000,000 + 5,000,000 + 80,000 + 7,000 + 400 + 30 + 5
