STATS 250 Lecture Notes - Lecture 12: Standard Deviation, Confidence Interval
STATS 250 verified notes
12/41View all
Document Summary
=0. 60: give the standard error for the estimate in part (a) and use it to complete the sentence that interprets the standard error in terms of an average distance. = 0. 6(cid:4666)1 0. 6(cid:4667) (2) we would estimate the average distance between the (1) s. e. 0. 0219 possible values and p to be about 0. 0219. 1 p + is a 95% ci for p. P 1: when we construct a ci for p, we don"t know whether it does or doesn"t contain true p. it either does or it doesn"t. 2 (cid:4666)1 (cid:4667: thus, about 95% of the intervals 2 (cid:4666)1 (cid:4667) will contain population proportion p, example, in a gallup youth survey n = 500 randomly selected american teenagers were asked about how well they get along with their parents. One survey result was that 270 of the 500 sampled teens said they get along very. Well with their parents: the sample proportion was found to be 270/500 = 0. 54.
