- #1
TyErd
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- 0
Homework Statement
I've attached the question
Homework Equations
Pr(X<=x)= (x + 0.5 - n*p) / sqrt(n*p*(1-p))
The Attempt at a Solution
okay so n=1150, p=0.02 , Pr(X<23)
=23 + 0.5 - 1150(0.02) / sqrt(1150*0.02*0.98)
=0.105316
is that bit right so far. Because it is less than i thought x might've been 22 instead of 23 so when i did that it equaled -0.105316
im not sure what do after that. Am i suppose to find that value in the normal distribution tables or something?