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.
The earliest sunrise of the month in Anchorage is 8:07 AM on October 1 and the latest sunrise is 1 hour, 19 minutes later at 9:26 AM on October 31. The latest sunset is 7:29 PM on October 1 and the earliest sunset is 1 hour, 30 minutes earlier at 5:59 PM on October 31.