Question 1

X ~ Normal(1.7, 8)

The standard deviation of the random variable X is:

Question 2

The Excel function

=1 - NORM.DIST(25, 50, 10, TRUE)

describes the probability of an outcome that is:

1 point

less than 50 in a distribution centered at 10

greater than 50 in a distribution centered at 25

less than 25 in a distribution centered at 50

greater than 25 in a distribution centered at 50