Answer:
As sample sizes increase, the sampling distributions approach a normal distribution. With "infinite" numbers of successive random samples, the mean of the sampling distribution is equal to the population mean (µ).
Step-by-step explanation:
population variance =σ
sample variance=}[/tex]
where n is sample size
so as n increases ,}[/tex] decreases, so sample variance decreases
2+2 equals 4 and 2x2 also equals 4
First, you can add up 4+2 to get 6 because they’re both rates.
Next, divide 18 by 6 and you get 3.
So, it will take three hours for the boys to meet up.
One way to check your answer is to multiply 4x3=12 and 2x3=6 and 12+6 is 18.
Answer:
3 meters
Step-by-step explanation:
A hexagon has 6 sides, therefore the length of each side is 18/6=3 meters.
What operations would the set of quadratics be closed under? For each operation, explainwhy it is closed or provide an example showing that it isn’t.Type your response here:x^2-1+(x^2+2x+1)=2x^2+2x closed under addition.(x^2-1)-(x^2+2x+1)=-2x-2 not a quadratic(x^2-1)(x^2+2x+1)=x^4+2x^3-2x-1 no above degree 2(x^2+2x+1)/(x^2-1)=1+(3x+1)/(x^2+2x+1) not a quadratich. Is there a set of expressions that would be closed under all four operations? Explain.Type your response here: Polynomials with a degree of 0, real numbers, andrational numbers. Info is Not Mine you can find it at this site https://www.coursehero.com/file/p1255io/X1-1-Closed-g-What-operations-would-the-set-of-quadratics-be...