Question

In a population of 500 voters, 40% belong to Party X. A simple random sample of 60 voters is taken. What is the chance that a majority (more than 50%) of the sampled voters belong to Party X?

Answer 1

this is a binomial problem
n = 500 , p = .4 ,
we want probability more than 50% of 500 chose party X. so more than 250
So we want the cumulative probability of x = 251 , 252, 253, ... 499 , 500
Do you have a solution in your book?

Answer 2

the speed of the canadian goose is 35 km / 45 minutes = (35/45) km / min
the speed of the hummingbird is 35 km/ 60 minutes = (35/60) km / min
ok so far?
now lets change to km/hr

Answer 3

ok

Answer 4

wait I did this wrong

Answer 5

this is a binomial problem
n = 60, p = .4 ,
we want probability more than 50% of a sample of 60 chose party X. So we want probability of more than 30
So we want the cumulative probability of x = 31 , 32, 33, ...58,59,60

Answer 6

So I got .044480

Answer 7

on a TI 83 calculator you can solve
1 - binomcdf( 60, .4, 30) , that will give you probability there is more than 50% choosing party x in your sample

Answer 8

0.044480314
is correct ans???
@perl

Answer 9

no

Answer 10

@KABRIC plz explain method .. how to solve this problem.
n what is the correct ans ??

Answer 11

i am looking forward to that too friend

Answer 12

@KABRIC if u got method n soln plz explain me .. how to solve and correct ans

Answer 13

ok will let you know if i solve this one right ok

Answer 14

anyone with a more simple approach at this problem plz

Answer 15

any one got the ans

Answer 16

pls reply me

Answer 17

In an egg carton there are 12 eggs, of which 9 are hard-boiled and 3 are raw. Six of the eggs are chosen at random to take to a picnic (yes, the draws are made without replacement). Find the chance that at least one of the chosen eggs is raw.