A Local Retail Business Wishes to Determine If There Is

Multiple Choice

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) :
What is the degree of freedom?

A) 11
B) 22
C) 21
D) 20
E) 19