TTinc a company that manufactures engines for NASCAR drivers

TTinc, a company that manufactures engines for NASCAR drivers, gathered data for all its plants.You are the chief engineer of the North Carolina plant and want to test the claim that the North Carolina plant

TTinc, a company that manufactures engines for NASCAR drivers, gathered data for all its plants. You are the chief engineer of the North Carolina plant and want to test the claim that the North Carolina plants distribution of life span mimics the firms distribution. The table below contains the distribution of the life span of these engines in days for the entire company and the data on the random sample of 591 engines from your plant. Using the sample, test the claim at alpha = 0. 05. Include the null hypothesis, the alternative hypothesis, calculation of the experimental chi square value, one decision rule, one conclusion drawn

Solution

Alternative hypothesis: Oklahoma plant does not follow the firm