Statistical Sciences 2244A/B Lecture 11: 2244-lec 11
15 Nov 2016
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Question: an educator is trying to tailor her course materials to student needs. She is concerned about using certain colours in her materials, in case there is a high frequency of students with red-green colour blindness. Only way to summarize qualitative data is proportion. Question: you want to calculate the probability that at least 4 out of a srs of n=8 students in the educator"s course display red-green colour blindness. End of the margin of error is the estimated sample deviation of a sample distribution. P and q are statics measuring p. Z interval is tried to what con dence level we need. Assume: it is an srs type of sampling distribution we know stuff about. Assume: constant probability is what we are trying to estimate, and we don"t know what it is, we just need to know if its changing from trial to trial. Number of success and failure in the sample must be more than 15 each.
