The manager at a car assembly plant believes that the mean assembly time for a car is greater than the target time of 35 hours. We record the assembly times for a sample of ten cars. The mean and standard deviation assembly times of these ten cars are calculated to be 37 hours and 5 hours, respectively. Assembly times are known to follow a normal distribution. At the 5% level of significance, we have:

Question 13 options:

A)	insufficient evidence that the true mean assembly time is greater than 35 hours, since the P-value is between 0.20 and 0.30.

B)	insufficient evidence that the true mean assembly time is greater than 35 hours, since the P-value is between 0.10 and 0.15.

C)	sufficient evidence that the true mean assembly time is greater than 35 hours, since the P-value is between 0.10 and 0.15.

D)	insufficient evidence that the true mean assembly time is greater than 35 hours, since the P-value is between 0.05 and 0.10.

E)	sufficient evidence that the true mean assembly time is greater than 35 hours, since the P-value is between 0.20 and 0.30.

Answer rating: 100% (QA)

solution Th... View the full answer