Quiz 5

Cards (5)

$E(x) =$ $\mu ; Y =$ $bX +$ $a$  
$E(Y) =$ $bE(x) +$ $a =$ $b\mu +$ $a$
X is a random variable with variance $\sigma^2 ; Y =$ $bX +$ $a$  
$var(Y) =$ $b^2var(X) =$ $b^2\sigma^2$
requirements for a binomial distribution
each trial has 2 possible outcomes
each trial has the same probability of success (p)
n trials are independent
number of possible values
n + 1
Z-score 
$Z =$ $\frac{x-\mu}{\sigma}$

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