Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is =127.5 and the standard deviation is =0.4.

(a)Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.)

UCL=

LCL=

(b)Consider a sample providing the following data.

127.8

127.2

128.1

127.7

127.4

128.2

Compute the mean for this sample. (Round your answer to two decimal places.)

x =

(c)Consider a sample providing the following data.

128.3

127.7

127.6

128.2

128.5

129.0

Compute the mean for this sample. (Round your answer to two decimal places.)

x =