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.
This article is about the time zone with daylight change in North America. For the static time zone, see UTCâ09:00. The Alaska Time Zone observes standard time by subtracting nine hours from Coordinated Universal Time (UTCâ09:00). During daylight saving time its time offset is eight hours (UTCâ08:00). The clock time in this zone is based on mean solar time at the 135th meridian west of the Greenwich Observatory.