Sorry for plaguing you guys with questions lately. But the teacher won't let me drop the advanced maths classes until next term. :[

c. Explain why the distribution of the Z variable is normal, with a mean of 0 and a standard deviation is 1.

(Do I say something like, "We needed to solve a value to standard deviations?")

d. Calculate Pr(Z>1.4) [By the way, the > has an underline underneath it]

(What do I calculate it with? What's the probability that I'm supposed to calculate with? I don't get it...)

e. Calculate k if Pr(Z<k) [Again, the < has an underline.]

(And again, I don't get it D