Question

TIMWI. LESSON 11 Ivy Slaldu pluviens Save Score: 0.22 of 1 pt 6 of 6 (6 complete) HW Score: 70.37%, 4.22 of 6 pts The Sha 13.2.13-T Question Help Security is investigating procedures at an airport to reduce the variability in the amount of time it takes passengers to get through airport secunty. The following table surmanzes Sample standard deviation sample data collected from two different terminals employing different security Sample size procedures. Complete parts a and b. Terminal A 8.5 minutes Terminal B 93 minutes Calculate the appropriate test statistic. all (f The test statistic is 1.2 (Round to two decimal places as needed.) Determine the appropriate critical value(s). futa The critical value(s) is(are) 2.381 (Round to three decimal places as needed. Use a comma to separate answers as needed.) Do not reject the null hypothesis. There is insufficient evidence to conclude that the procedures at Terminal A more effectively reduce the variability than do the procedures at Terminal B. b. Use technology to find the p-value and interpret the result. The p-value is (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 1 part Clear All Check Answer 1 remaining

Answer 1

here test statistics =(s2/s1)² =(9.3/8.5)²=1.20

for (n2-1=12,n1-1=17) degree of freedom , crtiical value at 0.05 level =2.381

for test statistic is smaller than critical value

Do not reject the null.....there is insufficient evidence,,,,,,,,,,,

b)

for (n2-1=12,n1-1=17) degree of freedom and above test statistic , p value = 0.356 ( please try 0.358 if this comes wrong)