Specifications for a piece of material used in the manufacture of a bed mattress require that the piece be between a Lower and Upper value (in inches) centered around the process mean. The process that produces the piece yields a mean of 86 and a standard deviation of 0.4 inches. The distribution of output is normal. Within what values will 89.23 percent of sample means fall, if samples of n = 14 are taken and the process is in control? Question 5 options:

85.592 , 86.407

85.827 , 86.172

84.884 , 87.115

85.356 , 86.643

None of the Above