Question

A sociologist wishes to see if it is true that for a certain group of professional women, the average age at which they have their first child is 28.6 years. A random sample of 36 women is selected, and their ages at the birth of their first child are recorded. At α = 0.05, does the evidence refute the sociologist’s assertion?

Ages at birth 32   28   26   33   35   34   29   24   22   25   26   28   28   34   33   32   30   29   30   27   33   34   28   25   24   33   25   37   35   33 34   36   38   27   29   26

Answer 1

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