Hypothesis testing AP Stats, can you check my hypotheses?

1. Suppose a coin toss turns up 12 heads out of 30 trials. Can one determine the coin toss is fair?

Question

Hypothesis testing AP Stats, can you check my hypotheses?

1. Suppose a coin toss turns up 12 heads out of 30 trials. Can one determine the coin toss is fair?

fibonaccichick666 · Answer

Ho: p=.5
Ha:p not= .5

mathmale · Answer

Looks really good.  p=.5 is the expected outcome.  Your alternative hypothesis is everything that the null hypothesis is not, allowing for the possibility that the die in question has a p greater or smaller than 0.5.

fibonaccichick666 · Answer

Thanks, I just wanted to check myself