1. ## stats problem

Hey im having some problems with probability and here are the two homework questions.

1)What is the probability that you will pass a test and get at least 4 questions correct by randomly guessing on each question of a 6 question quiz multiple choice quiz with 5 choices for each question.

2) Every year at least 5 million people die of tobacco related causes, assume that the distribution is normal with a population mean of 5 million and a standard deviation of 2 million...find the probability that more than 4 million people will die of tobacco related causes and find the 75th percentile of the distribution of tobacco related deaths.

any help is appreciated!

2. for no.1 use binomial distribution.

n = 6

$p = \frac{1}{5}$

and then find

$P(X \geq 4)$

3. thanks... how about number 2?

4. Originally Posted by coheedfan1990