Determine whether the results appear to have statistical? significance, and also

Question

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 gender selection method used to increase the likelihood of a baby being born a? girl, 1903 users of the method gave birth to 936 boys and 967 girls.

There is about a 25?% chance of getting that many girls if the method had no effect. Because there is a 25?% chance of getting that many girls by? chance, the method: has statistical significance , does not have practical significance, does not have statistical significance or has practical significance.

Most/Not Many couples would likely use a procedure that raises the likelihood of a girl 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, does not have practical significance, does not have statistical significance or has practicle significance?

Explanation / Answer

Statistical significance is indicated when methods of statistics are used to reach a conclusion that some treatment or finding is effective, but common sense might suggest that the treatment or finding does not make enough of a difference to justify its use or to be practical. Yes, it is possible for a study to have statistical significance but not practical significance.

Statistical significance: Refers to the unlikelihood that mean differences observed in the sample have occurred due to sampling error. Given a large enough sample, despite seemingly insignificant population differences, one might still find statistical significance.

Practical significance: Looks at whether the difference is large enough to be of value in a practical sense.

(a) Because there is a 25% chance that such results would occur if the method had no effect,it does not appear to have practical significance.

Statistically significant is the likelihood that a relationship between two or more variables is caused by something other than chance.

(b)Because there is a 50% chance of getting such results and Because the likelihood also increase if more than 50% So there is practical significance.

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