# 105625123 3 2207888749 data n1 10 n2 12 x1 bar 1217

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1.05625123 3 2.207888749 Data: n1 10 n2 12 x1-bar 12.17 x2-bar 14.5 s1 1.05625123 3 s2 2.20788874 9 (A) Formulate the hypotheses:
Ha: μ1 ≠ μ2 is not zero (B) Choose the test statistic and the level of significance:
(C) State the decision rule:
(D) Calculate the value of test statistic: 1.63837202 2
(E) Compare with the critical value and decide:
(F) Compute the p- value for the test then interpret it: p- value =
2. 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, \$15.85. A sample of 14 customers at the Plum Street store revealed they spent the following amounts more than they planned when they entered the store: \$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, \$14.83. For data analysis, a t test: two-sample assuming unequal variances was used. At the .01 significance level, is there a difference in the mean amount purchased on an impulse at the two stores? Explain these results to a person who knows about the t