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 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

The cost of fencing around a square field id rs.12000. if the cost of fencing per meter is rs. 30, find the area of the square field.
Last week, a dairy farm produced m kg of cheese. The dairy farm also produced 28 kg more yogurt than cheese and 3 times as much ice cream as cheese. The dairy f
Three sets of data about ten sixth-grade students were used to make three dot plots. The person who made these dot plots forgot to label them. Match each dot pl
WILL GIVE BRAINLIEST IF ANSWERED FAST!!!
Which one replace the question mark?​
https://brainly.com/question/31367495
Being an entrepreneur comes with vario the personal benefits of entrepreneurship derstanding the ​
What are the key features of the equation y = (x + 12)(x + 6)?
it states us to compare two columnsplease help me​
What is an example of militarism being used in a good way