CAS MA 113 Lecture 18: Stats Notes Lecture 18
16 Mar 2018
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Ge claims that 3% of their light bulbs are defective. From a random sample of 350, 14 are defective. P^ ~ n (0. 03 , square root of ((0. 03 x . 97)/350)) Pr ( (p^ - 0. 03)/. 009) > (0. 04-0. 03)/0. 009) *** remember that the table is left handed. The table shows that it is about 13% This system allows us to determine the probability of any possible p^ that we can observe. These statistics are useful for a strong and accurate comparison. All of the problems that the exam will be focused on will look very similar to this setup/format. The smaller the probability- the greater the surprise factor of the topic at hand. The bigger the probability- the lower the surprise factor of the topic at hand. You can tell which differences curve are which because the thinner one will represent the larger n value. You want to find a z value that makes the given diagram/picture true.
