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.
Year distribution of sunrise and sunset times in Anchorage, AK - 2018 The following graph shows sunrise and sunset times in Anchorage, AK for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Anchorage, AK.