The Willow Run Outlet Mall has two Haggar Outlet Stores, one located on Peach Street and the other on Plum Street. The two stores are laid out differently, but both store managers claim their layout maximizes the amounts customers will purchase on impulse. A sample of 10 customers at the Peach Street store revealed they spent the following amounts more than planned: $17.58, $19.73, $12.61, $17.79, $16.22, $15.82, $15.40, $15.86, $11.82, and $15.85. A sample of 14 customers at the Plum Street store revealed they spent the following amounts more than they planned: $18.19, $20.22, $17.38, $17.96, $23.92, $15.87, $16.47, $15.96, $16.79, $16.74, $21.40, $20.57, $19.79, and $14.83. (1)Find the degrees of freedom for unequal variance test. (Round down your answer to nearest whole number.)
Degrees of freedom=
(2)State the decision rule for .01 significance level: H0: μPeach = μPlum; H1: μPeach ≠ μPlum. (Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.)
Reject H0 if t < or t > .
(3)Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Value of the test statistic=
(4)Is there a difference in the mean amounts purchased on impulse at the two stores? Use the 0.01 significance level.
(Do not reject or Reject??) H0. There ( IS significant OR NO significant??? )difference in the mean amounts purchased on impulse at the two stores.