A local retail business wishes to determine if there is a difference in preferred indoor temperature
Between men and women. A random sample of data is collected, with the following results (note:
There are slight differences between Excel and MegaStat output in this test) : 
If you use the 5% level of significance, what is the critical t value?
Definitions:
Datum Plane
An imaginary flat surface used as a reference for measuring and constructing geometries in design and manufacturing.
Orientation Tolerances
Limits on the allowable deviation in the position of features on a part relative to its specified orientation.
Angularity
The condition of a surface, axis, or center plane being specified at an angle to a datum plane or axis.
Tolerance Zones
Areas between the maximum and minimum permissible limits within which a size or geometric characteristic is considered acceptable.
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