Unformatted text preview: the choices of degrees of freedom is minimal). Substituting: = ± = × = ± 161 . 02 . 3 081 . * 984 . 1 02 . 3 497 81 . 1 * 984 . 1 02 . 3 859 . 2 to 3.181 Note that this differs slightly from that given in the book in part C but that is because we had to estimate our degrees of freedom from the table. Using a statistical program such as Minitab we would have arrived at the same answer as Minitab would have calculated a correct t multiplier for 496 degrees of freedom. In conclusion, we would say that we are 95% confident that the true mean number of children that females think is ideal is between 2.859 and 3.181 children. This exceeds the hypothesized value of 2 children leading us to believe that this hypothesized value is incorrect and is lower that expected....
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 '08
 BARROSO,JOAOR
 Statistics, Standard Error, 496 degrees

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