Question

QUESTION 17 (B. 4/4) Answer the following questions using data from the Police-Public Contact Survey. Are there differences between time of day and how long a police- stop lasts? Group Statistics Was stop during the day or at night? N Day 84 Night 124 Mean How many minutes did the stops Std Deviation 25.624 17.588 Sed. Error Mean 2.796 1.579 15.05 12.12 Independent Samples Test Levene's Test for Equality of Variances t-test for quality of Means Sig. - talled df 95% Confidence interval of the Difference Lower Upper -2.979 8.832 F 2.810 Mean Difference 2.927 1 .977 Std. Error Difference 2.995 .095 206 How many minutes did the stops Equal variances assumed Equal variances not 911 135.146 .364 2.927 3.211 -3.424 9.277 assumed Question: Based on the p-value, do you reject the null hypothesis? Use a = .05 to make your decision. Yes, p <a No, pa

Answer 1

Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 1 df 206 Sig. 2- tailed) 330 Mean Difference 2.927 Std. Error Difference 2.995 Equal variances 2.810 .095 How many minutes did the stop last 977 911 135.146 .354 2.927 3.211 Equal variances not assumed

Ans:

No. p >