A minister marries them in church
That depends on the practices of the denomination, but in general the answer is Yes for most main-line denominations (Presbyterians, Lutherans, Methodists, etc.)
yes! of course lutherans are christians!
Thrivent Financial for Lutherans was created in 2002.
Of course Lutherans believe in God! Lutherans believe in the one true God - The Triune God , Father, Son and Holy Ghost.
they were called protestants because they protested
Lutherans
The 2004 estimated number of Lutherans in America is around 13.5 million (http://www.adherents.com/rel_USA.html). Worldwide there are an estimated 70 million Lutherans.
Lutherans do baptize babies, and most believe it should be done. They baptize adults as well.
the Catholics and Lutherans
yes
From the question as stated, NO, as Lutherans and Calvinist are Christian.
No, but Lutherans DO think that only those believing in Jesus will spend eternity in Heaven.