Discuss the below:
Q: A newly designed phone battery, when fully charged, is supposed to last 48 hours with a tolerance limit of plus or minus 30 minutes under normal use. The current production process produces batteries that on average last 47.5 hours before requiring a recharge with a standard deviation of 15 minutes.
a. Compute Cpk and C Is this process capable? Explain your answer.
b. Changes to production process were implemented and the batteries produced now last on average 47.8 hours before requiring recharge with a standard deviation of 6 minutes. Is this modified process capable? Explain your answer.
c. If the process is still not capable what further action would you recommend to make the process capable?