With individual lines at its various windows, a post office claimed that the variance for waiting times for customers on Friday afternoon is 3.2 minutes. On a Friday afternoon, the post office at Bukit Baru tested the main waiting line for a random sample of 10 customers, the waiting times (in minutes) as shown below: 10 9.50 9.40 9.30 9.25 9.35 9.2 10.1 10.05 9.55 Is this a sufficient claim to conclude that the waiting time at post office of Bukit Baru is superior to 3.5 minutes? Use a 0.05 level of significance. Write your decision