If we were truly generating random numbers and there's no preference, what
proportion of these numbers would be even?
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0.50
If the sample proportion is equal to the number after the = sign,
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then no evidence is provided for Ha
, Confidence interval VS Hypothesis test
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estimate, find, learn "what"
show, prove a claim, make a decision
Two possible reasons for the difference in sample means:
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the difference really is due to the effect of light at night
the difference is just due to random variation
Researchers are interested in learning how different average weight is between
yellow labs and golden retrievers.
Confidence interval or hypothesis test?
Give this one a try later!
confidence interval
For our example on proportion of odd numbers we want to know if students avoid
odd numbers:
proportion of these numbers would be even?
Give this one a try later!
0.50
If the sample proportion is equal to the number after the = sign,
Give this one a try later!
then no evidence is provided for Ha
, Confidence interval VS Hypothesis test
Give this one a try later!
estimate, find, learn "what"
show, prove a claim, make a decision
Two possible reasons for the difference in sample means:
Give this one a try later!
the difference really is due to the effect of light at night
the difference is just due to random variation
Researchers are interested in learning how different average weight is between
yellow labs and golden retrievers.
Confidence interval or hypothesis test?
Give this one a try later!
confidence interval
For our example on proportion of odd numbers we want to know if students avoid
odd numbers:
