Please answer Ill give 50 or 100 points just say the color=(answer) please HELP THANKS YOU IF YOU DO
1 answer:
You might be interested in
Adding 2 to each value of the random variable makes a new random variable
. Its mean would be
since expectation is linear, and the expected value of a constant is that constant. is the mean of
, so the new mean would be
The variance of a random variable is
so the variance of would be
We already know , so simplifying above, we get
Standard deviation is the square root of variance, so .
so the standard deviation remains unchanged at 3.
NB: More generally, the variance of for
is
but the variance of a constant is 0. In this case, , so we're left with
, as expected.
Answer:
B
Step-by-step explanation:
To find the y- intercept let x = 0
From the table for f(x)
When x = 0 → f(x) = - 4
That is the y- intercept = - 4
Given
g(x) = 3
let x = 0 , then
g(0) = 3 [
= 1 ]
= 3 × 1
= 3
That is the y- intercept = 3
Thus the y- intercept of g(x) is greater → B