STAT151 Lecture Notes - Randomized Experiment, Apgar Score, Confidence Interval

• School: University of Alberta
• Department: Statistics
• Course: STAT151
• Professor: Susan Kamp

Document Summary

Background for a large sample test concerning a. For developing a test again the facts we know from the clt have to be considered. The point estimate for a probability of success is the sample proportion. From the clt, we know about the sampling distribution of that: if n is large, the sampling distribution of is approximately normal. In order to answer this question, we need to perform a hypothesis test. Interpret rejection and nonrejection of h0 for this example. Let p0 be a value between zero and one, and define the test statistic. = 2 p(z < -|zo|: p-value: Two tails: decision: reject h0, if and only if p-value . Suppose p is the probability to get a head when flipping a coin. Eric claims that the coin is fair, but amy wants to test if. She took a random sample of size 1000 showed 400 heads. Suppose amy wants to test if tails occurs more often than.