SOLUTION: show all work. twenty percent of american households own three or more cars. a random of 100 american households is selected. let x be the number of households selected that own th

Algebra ->  Probability-and-statistics -> SOLUTION: show all work. twenty percent of american households own three or more cars. a random of 100 american households is selected. let x be the number of households selected that own th      Log On


   

Question 386341: show all work. twenty percent of american households own three or more cars. a random of 100 american households is selected. let x be the number of households selected that own three or more cars
the probability that at least 30 of the households selected own at least 3 or more cards is
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
show all work.
-----------------------
twenty percent of american households own three or more cars.
------------------------------
a random of 100 american households is selected. let x be the number of households selected that own three or more cars
--------------------------------------
the probability that at least 30 of the households selected own at least 3 or more cards is ?
----
Binomial Problem with n=100 and p = 0.20
---
P(30<= x <=100) = 1 - P(0<= x <=29)
---
= 1 - binomcdf(100,0.2,29)
----
= 0.01125
============
Cheers,
Stan H.