Probability Problem

[Anonymous]

If I was to toss a coin one million times how many times would I expect the following to occur: -

5 Straight heads or tails
6 Straight heads or tails
7 Straight heads or tails
8 Straight heads or tails
9 Straight heads or tails
10 Straight heads or tails

Regards

Roger Bramall
(rogerbramall@mscbdg.co.uk)

 

[Francois]

What about (offhand):
0.5^x * (10E6 - x + 1)
?
This covers 'ar least' x straight heads.
If you want exactly x successes, multiply by: 0.5^(10E6 - x)

FRC