7 Which of the following is always true for any normal distr

#7

Which of the following is always true for any normal distribution?

A.The standard deviation is equal to 1.

B.The distribution is completely defined by its mean and number of trials, n.

C.The curve is symmetric around 0.

D.The curve is right skewed.

E.The total area under the curve is exactly 1

Solution

Which of the following is always true for any normal distribution?

E.The total area under the curve is exactly 1

that is true because as you know under the curve you will find the probabilities for each \"X\"

and you know that the total area under the curve need to be 1 for that area will be a probability functions

probabilities functions always sum 1