Q13 A machine produces parts with lengths that are normally distributed with a mean of19.7

19.7cm and a standard deviation of0.4

0.4cm. A random sample of60

60parts is taken.

The probability that the mean length of this group of parts is greater than19.72

19.72cm is

Ell Question 13 0 \"l 5' A machine produces parts with lengths that are nlzlrmallyr distributed with a mean of 19.7 cm and a standard deviation of 0.4 cm. A random sample of 60 parts is taken. The probability that the mean length of this group of parts is greater than 19.72 cm is: 0.1517 0.6002 0.2707 0.6517 0.7981