lect1
... Alpha level (α) corresponds to p-value (or p-level) for statistical test o Stands for probability level o Finding from sample would occur by chance alone 5 times out of 100 (α = .05) o Usual levels used in social sciences are .05 or .01 (sometimes .10) ...
... Alpha level (α) corresponds to p-value (or p-level) for statistical test o Stands for probability level o Finding from sample would occur by chance alone 5 times out of 100 (α = .05) o Usual levels used in social sciences are .05 or .01 (sometimes .10) ...
Math 475 Big Problems, Batch 2 Big Problem 7: Tulie Number
... • (b) If it wasn’t zero, she took the reciprocal. The result always had a whole number part so she went back to step (a). For instance: She started with the number 1.4 (she typed in 1.4 and hit Enter). • a. She subtracted 1 to get .4 • b. Then she took the Reciprocal to get 2.5. • a & b again. Now s ...
... • (b) If it wasn’t zero, she took the reciprocal. The result always had a whole number part so she went back to step (a). For instance: She started with the number 1.4 (she typed in 1.4 and hit Enter). • a. She subtracted 1 to get .4 • b. Then she took the Reciprocal to get 2.5. • a & b again. Now s ...
Point Estimation
... Recall: If a continuous numerical variable X has mean and SD , the sampling variability (variance) of sample mean X is ...
... Recall: If a continuous numerical variable X has mean and SD , the sampling variability (variance) of sample mean X is ...
ENGG2430A-Homework 5
... larger than zα/2 √sn = 2.27. This is again because the sample size is sufficiently large so that the sample standard deviation is a good estimate of the population standard deviation. 2. Ex 9.8 from textbook An efficiency expert wishes to determine the average time that it takes to drill three holes ...
... larger than zα/2 √sn = 2.27. This is again because the sample size is sufficiently large so that the sample standard deviation is a good estimate of the population standard deviation. 2. Ex 9.8 from textbook An efficiency expert wishes to determine the average time that it takes to drill three holes ...
Topic: Interval Estimate of a Population Mean and a Population
... Below is the procedure to obtain an interval estimate of a population mean using Excel: Function>>category ‘Statistical’>>choose the function ‘Confidence’, which returns the margin error of a confidence interval for a population mean; Next, specify the value of Alpha () – .01, .05, or 0.1, etc >> e ...
... Below is the procedure to obtain an interval estimate of a population mean using Excel: Function>>category ‘Statistical’>>choose the function ‘Confidence’, which returns the margin error of a confidence interval for a population mean; Next, specify the value of Alpha () – .01, .05, or 0.1, etc >> e ...
German tank problem
In the statistical theory of estimation, the problem of estimating the maximum of a discrete uniform distribution from sampling without replacement is known in English as the German tank problem, due to its application in World War II to the estimation of the number of German tanks.The analyses illustrate the difference between frequentist inference and Bayesian inference.Estimating the population maximum based on a single sample yields divergent results, while the estimation based on multiple samples is an instructive practical estimation question whose answer is simple but not obvious.