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.
Find time: Almost all of Alaska is in the Alaska Time Zone which is is 9 hours behind Greenwich Mean Time (GMT-9). The western most Aleutian islands and St. Lawrence island are on Hawaii-Aleutian Time, which are 10 hours behind Greenwich Mean Time (GMT-10) and where Daylight-Saving Time is not observed.