u do know that that question makes no sense? i think u left out a little bit at the end.............. u mean an ed?
"Statistically significant" means that the result is beyond the element of chance.
Alpha = 4.37% is rarely used.
difference is large
A result is statistically significant if:it is unlikely to have occurred by chance
No, it is not.
if it is unlikely to have happened by chance
No. However, the difference between them can be.
A number, by itself, cannot be statistically significant. It is necessary to know what the underlying statistical distribution for that number is. That information can be obtained from knowledge of the statistical test being carried out.
This may seem confusing, but I'll try. When you collect data from a sample, you have to determine if the differences you found is so great that it is statistically significant in the population (whole). Differences will occur in data, but if they are not considered significant they are not useful. You would run certain inferential tests to see if something is significant. The test you run depends on the type of data you collect.
You buy a thousand lottery tickets (different numbers) and win nothing. That is statistically significant because the chances of that happening purely by chance are pretty slim. But if the lottery is operated properly, the result is not practically significant. There is nothing that can be done. Tough!
There is nothing particularly significant about a sample size of 30.
This question lacks the details to make any judgement.