Question

a coin tossed 60 times about how many times would you expect it to land on heads

Answer 1

well if the probability of having heads is 1/2 then multiply 1/2 and 60

Answer 2

30

Answer 3

so it would be \[\frac{ 1 }{ 2 } \times 60 = 30\]

Answer 4

Using the Binomial Distribution, the average number of successes is \(n\times p\), where \(n=60\) and \(p=\cfrac{1}{2}\):

http://en.wikipedia.org/wiki/Binomial_distribution#Mean_and_variance