Problem 1 (14 marks.) As a solution for improving quality consistency= a Six Sigma team suggested to a TV manufacturer to change the supplier of a particular electronic board. The engineering department requires that the standard deviation of voltage of boards in each lot be less than or equal to 3.4 volt in order to accept it. A lot including 18 boards was delivered from a new supplier and the voltages of boards were measured. The average and standard deviation of sampled voltages were then calculated as 4 and 0.43, respectively. Assuming that the voltage of boards follows a normal distribution and based on the measured voltage hunt the delivered lot. answer to the following questions?I 1:} At a 95% condence level. can the team recommend the new supplier to the company? (Describe the null and alternative hypotheses). 2.} Calculate the p-value of your test and analyze your answer in (l), accordingly