Question

found Researchers at The Wharton School of Business have found that mad h oo W womeny the shopping exponence men are on a m an to the one not shop as frequently but when they do they make big purchases ke expensive accompanying table shows a portion of the amount spent over the word by men and how Localm a sonable to assume that the population vonances are equal no apare but when localming tables Spending by Spending by Women Spending by Men Spending by Women 30 79 102 139 92 100 119 90 72 97 52 180 88 140 00 118 100 104 110 8839888 110 54 129 129 28 13 00 132 117 88 92 105 95 119 118 124 70 75 113 124 71 115 95 102 94 8888888889335 38 104 54 108 110 85 O Type here to search 0 Ft 03 e

Answer 1

a-1) NULL HYPOTHESIS H0:

μl – μ2 <0

ALTERNATIVE HYPOTHESIS Ha:

μl – μ2 20

alpha=0.01

Group Statistics 0 N DA_TA 1 Mean 40 99.7500 6082.1000 Std. Deviation 21.35386 33.86899 Std. Error Mean 3.37634 4.37247 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 99% Confidence interval of the Difference Mean Difference Std. Error Difference Lower DA_TA df 98 Sig. (2-tailed) .004 Upper 33.48503 2.464 120 2.928 17.65000 6.02796 1.81497 Equal variances assumed Equal variances not assumed 3.195 97.757 .002 17.65000 5.52432 3.13727 32.16273

By using SPSS (Equal variances assumed)

t = 2.928

degrees of freedom= 98

t critical= 2.365

Since t critical smaller than the t cal therefore significant

Decision:REJECT HO.

Conclusion:OPTION A