Hi xdayita,

im not using excel so i had to look it up...

http://office.microsoft.com/en-gb/ex...005209005.aspx

X is 14 (Successes == Waited for more than 1 hour), 50 is the whole sum of values taken which you got right, 0.28 is the probability to wait more than 1 hour==translates to a 28 % probability to wait more than 1 hour).I believe it is (X, 50,0.28,False) but what would x be how would i find that?

You may also use R - its free and helpful in statistics:

Where 14==Waited for more than 1 hourCode:`binom.test(14,50,1/2)`

Where 50==is the whole sum of values taken

Where 1/2==Possible outcomes == Wait at least or less 1 hour / Wait more than 1 hour

R-Output is:

Exact binomial test

data: 14 and 50

number of successes = 14, number

of trials = 50, p-value = 0.002602

alternative hypothesis: true probability of success is not equal to 0.5

95 percent confidence interval:

0.1623106 0.4249054

sample estimates:

probability of success

0.28

Hope this helps.

Sebastian