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.
5/23/2011 10:34 a.m. SEATTLE  Alaska Airlines is extending the hours that members can visit its Board Room airport lounges in Anchorage, San Francisco, Seattle and Portland, Ore. The Anchorage Board Room will be open daily from 5 a.m. to 1:30 a.m., starting June 11, four to six hours longer per day than its current schedule.