STAB22H3 Lecture 22: STAB22- Lecture 22- Ch. 15 and Ch. 16
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Draw a srs of size n from a large population, with population p of success. Let x be the count of success in the sample and p-hat = x/n the sample proportion of successes. When n is large, the sampling distributions of these statistics are approximately normal: A sample survey asks 2000 college students whether they think that parents put too much pressure on their children. We will view the responses of these sampled students as an srs from a population. Here, n = 2000 college students and x = 840 is the number of students who think that parents put too much pressure on their children. What is the sample proportion of students who think that parents put too much pressure on their children. Let x = the random variable that gives the count for the outcome of interest. When arandom variable has tow possible outcomes, we use the formula of p-hat = x/n.
