Determine whether the results appear to have statistical significance, and also determine whether the results appear to have practical significance.
In a study of a birth sex selection method used to increase the likelihood of a baby being born female, 2085 users of the method gave birth to 1019 males and 1066 females. There is about a 169
chance of getting that many babies born female if the method had no effect.
Because there is a 16% chance of getting that many babies born female if the method had no effect, the method
procedure that raises the likelihood of a baby born female from the approximately 50% rate expected by chance to the produced by this method.
(Round to the nearest integer as needed.)
So, this method
has statistical significance.
should be used to make conclusions.
has practical significance.
does not have practical significance.
4
%
couples would likely use a