According toresearch, holiday shoppers spent an average of $372 over a holiday weekend in 2008. The accompanying data show the amount spent by a random sample of holiday shoppers during the same weekend in 2009.

a. Retailers were concerned that the recent economic downturn was going to affect holiday sales. Does this sample support these concerns using =0.10?

Determine the criticalvalue(s).

The criticalvalue(s) is(are)