Type two error (I'm in a pit of despair with this problem)

[Guest]

So I think I am going insane trying to solve this problem. I have spent almost 2 days trying to figure it out which foruma or formulas to use. Hope you can help my melodramatic, cave-dwelling self.

A hypothesis test is performed to test the claim that a population proportion is greater than 0.7 find the probability of a type II error,[tex]\beta[/tex] given that the true value of the population proportion is 0.72. the sample size is 50 and the significance level is 0.05

[HallsofIvy]

Please show us what you have done those two days so we will know better what help you need!