# Question

The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants. Research question: Are the mean hourly productivity levels the same for workers in these three plants?

## Answer to relevant Questions

Below are results of braking tests of the Ford Explorer on glare ice, packed snow, and split traction (one set of wheels on ice, the other on dry pavement), using three braking methods. Research question: Is the mean ...In a one-factor ANOVA with sample sizes n1 = 8, n2 = 5, n3 = 6, n4 = 6, the test statistic was F calc = 3.251. (a) State the hypotheses. (b) State the degrees of freedom for the test. (c) What is the critical value of F for ...In a market research study, members of a consumer test panel are asked to rate the visual appeal (on a 1 to 10 scale) of the texture of dashboard plastic trim in a mockup of a new fuel cell car. The manufacturer is testing ...Several friends go bowling several times per month. They keep track of their scores over several months. An ANOVA was performed. (a) What kind of ANOVA is this (one-factor, two-factor, etc.)? (b) How could you tell how many ...The regression equation NetIncome = 2,277 + .0307 Revenue was estimated from a sample of 100 leading world companies (variables are in millions of dollars). (a) Interpret the slope. (b) Is the intercept meaningful? ...Post your question

0