Can someone provide me the formulas and steps to find the probability of committing a Type Two error in statistics? For example, when the mean is 80%, but you have on scenario with 77%. Then part B asks for 88%.

Question

amistre64 · Answer

these tend to relate to some alpha and beta numbers if memory serve

anonymous · Answer

alpha = 0.05  and n = 250

amistre64 · Answer

i aint got a good mouse for drawing at the moment .... pictures help organize these things alot

amistre64 · Answer

type 2 is that we accept a false null hypothesis

amistre64 · Answer

http://www.cliffsnotes.com/math/statistics/principles-of-testing/type-i-and-ii-errors type 2 is the hypothesis Ha is rejected, the Pvalue related to Ha being the mean

amistre64 · Answer

are you able to work this on a ti83 or similar?

amistre64 · Answer

we need to determine the z score for a p of .80, 

since .77 < .80  im assuming we can use a left tailed alpha such that$$z_{.0500}=\frac{\hat p-.80}{\sqrt{.80(.20)/n}}$$
given that the true value is .77, we want to use the same comparison given that p hat is determined from above

amistre64 · Answer

http://www.youtube.com/watch?v=BJZpx7Mdde4 this was understandable to me.