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## Homework Statement

"The probability that a new drug will cure a skin rash is 0.82. if the drug is administered to 200 patients with the skin rash, find the probability that:

a)more than 150 will be cured?

b)between 170 and 180, inclusive will be cured?

"

## Homework Equations

## The Attempt at a Solution

i really dont know how to solve it, i missed the class for this one and i have no clue. I think i will have to use the z-score table, but it doesnt make sense, and i never had to get a probability of a probability.

any help or hint will be greatly appreciated, Thanks !

p.s. I didnt know where to post my question, so if am posting in the wrong section, i apologize

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