STATISTC 111 Lecture Notes - Lecture 20: Standard Error
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Chapter 19 the rule of sample proportions of is normally distributed with mean p andstd dev n. The rule of sample means is normally distributed with mean u andstd dev ern. I the parameters are known or assumed examplet. Assume iq scores have a mean of 100 and std dev 15. T o a take one person at random find the probability that person"s iq is greater than 105 what percent of people have an. Sample 25 people find the probability that there. Assume men"s heights have a mean of 172 in with a std dev of 24in a choose 1 man at randomfind the probability p x5160. Choose 16 men at random find the probability that the is below 160 p. O 025 of people are lef handed example3_ Take a sample of 100 people then find the proportion of left handers p a find the interval that into 95 of the time.
