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synkk
#9
Mar3-12, 06:19 PM
P: 216
Quote Quote by Ray Vickson View Post
Yes, but I think you have already been given enough hints by others. Just look at the diagram, sit down, relax, and _think_. Don't try to write down the answer right away: approach it systematically, piece-by-piece, and don't worry if it takes longer than you think it should. After you see what is happening you can go back and clean it up.

RGV
still on question 1) i dont understand why (45 - mu) / sigma is positive 0.67, could you explain please?

for c i done (1-0.6463)/3 as there is 3 parts, with the shaded region being the smallest, which gets me the correct value.

For D I've standardized it but i'm not sure what value i should put it against...