Is there evidence that the population mean price of 4-cylinder cars is less than that of 6- cylinder cars? Use a 13% level of significance Claim: We want to test the claim that the 4-cylinder cars sold at the auction are priced Hypothesis statement: Null hypothesis - HO: Alternative hypothesis - H1: Analysis of results: Divide P-value and show for one-tail . Verify on Casio or excel. Statistical and managerial decision: SPSS output: Group Statistics Std. Error Cy16 N Mean Std. Deviation Mean Price 0 389 13216.24 2952.884 149.717 1 111 14745.81 3725.548 353.613 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Significance Mean Std. Error Difference F Sig. df One-Sided p Two-Sided p Difference Difference Lower Upper Price Equal variances assumed 4.056 .045 -4.527 498 <.001 equal variances not assumed>