Using Your TI 838489 Calculator Estimating a Population Mean Unknown Form

Instructions and help about Using Your TI 838489 Calculator Estimating A Population Mean Unknown

so we talked about constructing consonant intervals for a population proportion now we're going to talk about constructing confidence intervals for population mean so we need our point estimate and remember that that is the value of this statistic that estimates the value of a parameter so when we're looking at population means our point estimate is X bar so let's take a look at an example constructing 99% confidence interval about the population mean weight in grams of pennies minted after 1982 assume mu equals point zero two grams so we know the population mean is point zero two grams and so we collect 17 pennies and we weigh them and here are their weights okay and so we can enter those into the calculator and get the mean weight and the standard deviation and so we're gonna construct a 99% confidence level or confidence interval so that means we're using a 99% level of confidence so alpha equals 0.01 and so what that means is if we took a hundred different confidence intervals if w