-270 \2 = -135 so that should be the correct answer
Answer:
Convert the age to a z-score:
Step-by-step explanation:
Let X be the random variable with mean 27.2 and standard deviation 3.8.
Here, the observation, x is 24.
Start by plugging 0 into the equation and see which ones give you 350 back. Those equations are the right ones,
Yes it is b because a positive multiplied by a negative is a negative.
4(9) + 3s = 75
36 + 3s = 75
3s = 39
s = 13