【单选题】In a goodness-of-fit test where the sample of 200 observations are distributed among 5 categories, what is the critical value of χ2 for a significance level of 0.05?
【简答题】You’re an yst for Ford. You want to find out if the average miles per gallon of Escorts is less than 32 mpg. Similar models have a standard deviation of 3.8 mpg. You take a sample of 36 Escort...
【简答题】Chapter 4, Problem 4 In the solidification of a metal, what is the difference between an embryo and a nucleus? What is the critical radius of a solidifying particle?