During a particular week. 13 babies were born in a maternity
unit. Part of the standard procedure is to measure the length of
the baby. Given below is a list of the lengths, in centimeters, of
the babies born in this particular week.
49 50 45 51 47 49 48 54 53 55 45 50 48
Assuming that this sample came from an underlying normal
population. test, at the 5% significance level, the hypothesis that
the population mean length is 50 cm.