SOLUTION: Having lots of trouble mapping this out. Please help. If 4.1% of the population of Finland lives to the age of 90, what is the probability that of 1000 Finlandians: a) between

Question 211052: Having lots of trouble mapping this out. Please help.
If 4.1% of the population of Finland lives to the age of 90, what is the probability that of 1000 Finlandians:
a) between 30 and 40 will live to be 90 years old?
b) more than 80 of them will live to be 90 years old?
c) less than 20 of them will like to be 90 years old?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If 4.1% of the population of Finland lives to the age of 90, what is the probability that of 1000 Finlandians:
---
The populatin mean is 0.041; the standard deviation is sqrt(0.041*0.959)
= 0.1983
-------------------------------
I'm using a TI calculator to get the answers below.
a) between 30 and 40 will live to be 90 years old?
Ans: binomcdf(1000,0.041,40) - binomcdf(1000,0.041,29)= 0.4493..
------------------------------------------------------------------------
b) more than 80 of them will live to be 90 years old?
Ans: 1 - binomcdf(1000,0.041,80) = 0.0000000099057
-----------------------------------------------------------------------------
c) less than 20 of them will like to be 90 years old?
Ans: binomcdf(1000,0.041,19) = 0.00007855
==========================================================
Cheers,
Stan H.

RELATED QUESTIONS
Can you explain absolute value to me? I need help solving this problem. -6+2. I think the (answered by prince_abubu)

jack was 11 years older than priscilla together their ages are 153, what were their ages. (answered by josmiceli,VictoryStar)

Please help me find a solution to this problem I am having trouble understanding how to... (answered by scott8148)

Here is the problem I am having trouble with. All I want is just the formula in order to... (answered by stanbon)

I am having lots of trouble in this area of math, but I'm ask to write the complex number (answered by Alan3354)

Please help me with this problem am having lots of problems with math especially... (answered by stanbon)

I am having trouble working this problem Britney paid 90 dollars for a radio and it... (answered by unlockmath)

I am having lots of trouble answering this equation. Solve by substitution method:... (answered by Earlsdon)

What is the image of point (3,4) for mapping (x,y), (X+4,... (answered by ikleyn)