STAT 401 Lecture Notes - Lecture 6: Statistical Parameter, Point Estimation, Sample Size Determination
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Stat401 lecture 6: ci"s for population parameter/student t. We are 95% confident that among all kitchens with gas cooking appliances, that the true average co2 level is between 608. 58 and 699. 74 ppm. n = ( /2 * s. = n p p = n x p and. If both and qn pn distribution. then also has an approximately normal distribution. p is an unbiased estimator of p x. Where q = 1 p. And the width of the confidence interval for large sample size is given by w = 2 /2 * n. 25 p = . b) because . 5 n = w = . n = 2. In this case, we will use the student"s t distribution. let the population be normal and let be samples from this population with mean . Comparison of z and t known normal population.