However, if you are given the mean for the data the procedure is different
The average age of mothers in the US when they give birth to their first child is 25.1.
x
= 2.6. The average age of a sample of 200 women from the Arkansas Delta
region is
21.7.
Our hypothesis is: Ha: The age of mothers giving birth to their first child is significantly
lower in the Delta region of Arkansas than the national average of the sample is
significantly lower than the national average. Ha: µ < µ0
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