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.
No other Michigan Representative was born before 1951 with Republican maverick Justin Amash one of just six House members born in the 1980s. Rounding out the Top 10 oldest delegations in the nation are California, New Jersey, and North Carolina with an average age of 59 years for each stateâs respective representatives. On the other side of the spectrum, Kansas Republicans Tim Huelskamp (44 years old), Lynn Jenkins (49), Kevin Yoder (37), and Mike Pompeo (49) comprise the youngest multi-member delegation in the House averaging just 44 years of age.