How would I compute the type 1 error rate of the following test:(adsbygoogle = window.adsbygoogle || []).push({});

accept that coin is fair if in 30 tosses the coin gives between 11 and 19 heads (inclusive), reject otherwise.

I guess my Ho is 11/30<p<19/30

and H1: p < 11/30 or p > 19/30

so type I prob = P(p < 11/30) + P(p > 19/30) both under Ho.

Is this correct?

thanks

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# Coins and testing

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