Please HELP best answer will receive a BRAINLIEST. Given the probability density function f ( x ) = 1/3 over the interval [ 4 , 7 ] , find the expected value, the mean, the variance and the standard deviation.

Now we can find the second moment with this formula:

And the variance for this case would be:

And the standard deviation is:

Step-by-step explanation:

For this case we have the following probability density function

And for this case we can find the expected value with this formula:

Now we can find the second moment with this formula:

And the variance for this case would be:

And the standard deviation is:

no idea

step-by-step explanation:

my guess would be b and d, but i didn’t actually get out the pen and paper. lol