6. According to a retail organization, holiday shoppers spent an average of $935.58 over the
Thanksgiving weekend in 2016. The accompanying data show the amount spent by a random sample of
holiday shoppers during the same weekend in 2017.
$1,029 $871 $971 $838 $825 $817
$962 $1,035 $989 $993 $921 $662
$1,013 $1,026 $978 $878
a. Is there sufficient evidence to conclude that shoppers spent less than an average of $935.58 over
the Thanksgiving weekend in 2017 using \(\alpha = 0.05\)?
b. List any assumption(s) you make in concluding the hypothesis test in part a.