You use a t-scoreâalso known as a Student's t-distributionâwhen you want to estimate a population statistic, such as the mean, or compare two groups of data. The t-score gives good results from small samples as long as the sample data form a bell-shaped curve when graphed.
The only fortified wine that can stand open any length of time is Madeira. That'll be good for 6 months. All the rest (port or sherry or marsala), depending on what it is exactly, only maximum, 2 weeks. After that, absolutely no good. And even 2 weeks is pushing it for some fortified wines. cheers, Bonnie.
While the city's natives sometimes drink vintage Marsala, the wine produced for export is universally fortified similar to Port, Madeira and Sherry. Originally, this addition of alcohol was to ensure that it would last on long ocean voyages, but now it is made that way because of its popularity in foreign markets.