natashalane1193 natashalane1193

01-07-2018
Mathematics

contestada

If the variance of a discrete random variable x is v(x) = 1.6, then v(2x + 3) is

Respuesta :

sqdancefan sqdancefan

01-07-2018

Adding an offset to the data changes the mean, but not the variance. Multiplying the data by a constant changes the variance by the square of that constant.
v(a·x) = a²·v(x)

You will have v(2x+3) = 2²·v(x) = 4·1.6 = 6.4

Answer Link

Otras preguntas

What are three benefits to allow citizens to change a law

NEED HELP!!! 50 POINTS Question : Please Define the following forms of government. Explain each of these forms of government or governmental philosophies their

2 3/4 divided by ( -1 2/3

I’m not to sure how I would create a polynomial function from the graph any help or examples meeting the criteria?

A safe has 10,000 possible lock combinations. If a thief tried 80 combinations the first hour, then 40 every hour after, how many hours would it take before try

What action did president franklin roosevelt take in response to protests against jim crow laws?.

Instrucciones. • Lee el tema que se te presenta. • Responde al tema en el

Why did the revolution cause white americans to move onto native american lands?.

How many men are killed each hour during World War I?

(I just need the conclusion; here are the charts) Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Pl