Math Is Fun Forum

mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

P(at least 1 tails)

Probability of getting at least 1 “tails” on 3 coin flips.

Here we go.

P(3 coin flips) = (1/2)^3 = 1/8

P(at least 1 tails) = 1 - P(3 coin flips)

I say yes.

You say?

Bob

Administrator

Registered: 2010-06-20

Posts: 10,627

Re: P(at least 1 tails)

This will work but again you need to say P(no tails) = 1/8

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

Re: P(at least 1 tails)

This will work but again you need to say P(no tails) = 1/8

Bob

Ok. I gotta read more on "at least" probability problems and their set up.