Crosstabulation Table OBSERVED Male Female Total Purchase 270 280 650 No Purchase 90 440 530 Total 360 720 1080 EXPECTED Male Female Total Purchase 183.333 366.667 550 No Purchase 176.667 353.333 530 Total 360 720 1080 Calculation of the Chi-Square Test DESCRIPTION VALUE y '* 125.2281 p-value 0.0000 Critical value 3.8415 0.05 df a. Based on the data, what is the null and alternative hypotheses? b. What is the test statistic and the p-value for the chi-square test for your test in part a. What is your decision? c. calculate the x2 test statistic