The single-sample t-test compares the mean of the sample to a given number (which you supply). The dependent-sample t-test compares the difference in the means from the two variables to a given number (usually 0), while taking into account the fact that the scores are not independent.The independent samples t-test compares the difference in the means from the two groups to a given value (usually 0).he single sample t-test tests the null hypothesis that the population mean is equal to the given number specified using the option H0=. In our example, the t-value for variable write is 4.14 with 199 degrees of freedom.
Vermont had the second-highest median age, at 42.3 years. New Hampshire was third, with a median age of 42. Utah was the youngest state, with a median age of 29.9 years. Officials say among Maine counties, Lincoln is the oldest with a median age of 49.4 years. Androscoggin County was the youngest, at 40.5 years.
The oldest-marrying states are New York (28.8 for women, 30.3 for men), Massachusetts (28.8, 30.1), Rhode Island (28.5, 30.2), Connecticut (28.2, 30.0) and New Jersey (28.1, 30.1). But D.C. politicos seem to have the hardest time settling down, with the median age of first marriage at 29.8 for women and 30.6 for men. As for the youngest-marrying states, Utah takes first place with the median age of 23.5 for women and 25.6 for men. Others include Idaho (24.0 for women, 25.8 for men), Wyoming (24.5, 26.8), Arkansas (24.8, 26.3) and Oklahoma (24.8, 26.3).