t-Test. Papers Introduction to the t-Test (University of Leicester) Describes the conditions that must be met in order to use of the test.Z-test and t-test are basically the same, they compare between two means to suggest whether both samples come from the same population.
Anchorage gets 22 hours of daylight on the longest day of summer. On the shortest day of winter, there are still seven and a half hours of daylight.
All of Alaska does not go dark in winter! But the further north you go, the darker it gets. Shortest Day of the Year. On the shortest day of the year (December 21, winter solstice), youâll find a range of daylight hours depending on where you are: Even though residents of Barrow, the northernmost town in Alaska, won't see the sun for 67 days come winter, they enjoy the midnight sun all summer - over 80 days of uninterrupted daylight. Anchorage enjoys a more modest amount of daylight in summer than Barrow - but that's still a good 19 hours between sunrise and sunset on the longest day of the year, Summer Solstice.