QUESTION 1 A quality assurance analyst wants to test the calibration of two pieces of equipment. Each machine is set to cut a part to a specified length. The variation in each machine is believed to be identical but they may be set to different lengths. The analysts wants to determine if the machines are set to identical lengths. What type of hypothesis testing model should she use to perform her analysis? Dependent Sample Independent Sample - Known Variance Independent Sample - Unknown Unequal Variance Independent Sample - Unknown Equal Variance QUESTION 2 A quality assurance analyst wants to test the calibration of a piece of equipment. The machine can be set to operate at two different speeds depending on material being processed. The analyst wants to determine if the machine delivers an identical average length at either speed. What type of hypothesis testing model should she use to perform her analysis? Independent Sample - Unknown Unequal Variance Independent Sample - Known Variance Independent Sample - Unknown Equal Variance Dependent Sample QUESTION 3 An analyst proposes a a two sample hypothesis test at the .05 level based on two samples with known variances. The hypothesis is Ho: H1 = H2 Ho: H1 * H2 After collecting the data a z value of 1.7 is calculated. Should the analyst reject the null hypothesis? Yes No