# Please circle all final answers and indicate which portion you are working on. Will rate for...

###### Question:

Please circle all final answers and indicate which portion you are working on. Will rate for correct answers. Please show all work. Thank you!

10.2.3 GO Tutorial The diameter of steel rods manufactured on two different extrusion machines is being investigated. Two random samples of sizes nj = 15 and n2 = 17 are selected, and the sample means and sample variances are Ij = 8.70, sỉ = 0.35, 72 = 8.68, sź = 0.40, respectively. Assume that o = oz and that the data are drawn from a normal distribution. (a) Is there evidence to support the claim that the two machines produce rods with different mean diameters? Give bounds on the P-value used to make your conclusion. Use only Table V of Appendix A. P-value Conclusion: Ho LINK TO TEXT (b) Construct a 95% confidence interval for the difference in mean rod diameter. Use only Table V of Appendix A. Round your answer to 3 decimal places. LINK TO TEXT (c) Which of the following is a correct interpretation of this interval? O We are 95% confident that the true difference in mean diameters from the two machines is between -0.424 and 0.464. We are 95% confident that the true difference in mean diameters from the two machines is 0. Since O is contained in the interval, there is a 95% probability that the true difference in mean diameters from the two machines is 0. There is a 95% probability that the interval contains the true difference in mean diameters from the two machines. LINK TO TEXT

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