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.
Main article: Marsala wine. Marsala wine is a wine from Sicily that is available in both fortified and unfortified versions. It was first produced in 1772 by an English merchant, John Woodhouse, as an inexpensive substitute for sherry and port, and gets its name from the island's port, Marsala.