SOLUTION: 60% of the voters favor Ms. Stein. If 4 voters are chosen at random, find the probability that none support Ms. Stein, and the probability that at least one supports Ms. Stein.

Question 662185: 60% of the voters favor Ms. Stein. If 4 voters are chosen at random, find the probability that none support Ms. Stein, and the probability that at least one supports Ms. Stein.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
60% of the voters favor Ms. Stein. If 4 voters are chosen at random, find the probability that none support Ms. Stein, and the probability that at least one supports Ms. Stein.
------
Binomial Problem with n = 4 and p(support) = 0.6 ; p(do not) = 0.4
----
P(at least one supports) = 1 - P(none support)
----
= 1 - 4C0(0.6)^0(0.4)^4
-----
= 1 - 0.4^4
-----
= 0.9744
===============
cheers,
Stan H.
===============
RELATED QUESTIONS
60% of the voters favor Ms. Stein. If 3 voters are chosen at�random, find... (answered by Fombitz)

60% of the voters favor Ms. Stein. If 5 voters are chosen at random, find the... (answered by ikleyn)

90% of the voters favor Ms. Stein. If 5 voters are chosen at random, find... (answered by Fombitz)

80% of the voters favor Ms. Stein if 4 voters are chose at random, find the probability... (answered by robertb)

80% of the voters favor Ms. Stein. If 6 voters are chosen at random, find the... (answered by Boreal)

In a survey,55%of the voters support a referendum.if 40 voters are chosen at random and x (answered by stanbon)

A survey done of 25 voters revealed that 17 voters where in favor of a recent change and... (answered by stanbon)

20 voters. 12 favor and 8 oppose. if 5 random voters are selected what is the probability (answered by ewatrrr)

71% of all voters favor Proposition A and a random sample of 200 voters is taken. Use the (answered by ewatrrr,ikleyn)