Answer:


Now we can find the expected value with this formula:

And replacing we got:

Step-by-step explanation:
For this case we know the following probability mass function given:

For this case we need to satisfy the following condition in order to have a probability distribution function:

And we have this:


Now we can find the expected value with this formula:

And replacing we got:

It’s not a conic section so there’s no axis of symmetry
Answer:
the first option is the correct answer
The nine
Or is it asking for the number it was before it was rounded from the hundreths?
Answer:
SN =
= 7
Step-by-step explanation:
SN² + 24² = 25²
SN² + 576 = 625
SN² = 49
SN = 