1. The problem statement, all variables and given/known data with an individual lines at its various windows , a post office finds that the standard deviation for normally distributed waiting times for customers on Friday afternoon is 7.2 minutes . The post office expreiemets with a single, main waiting line and finds that for a random sample of 25 customers, the waiting times for customers have a standard deviation of 3.5 minutes.with a significance level of 5% , test the claim that a single line cause lower variation among waiting times for customers 2. Relevant equations 3. The attempt at a solution my chi square test value = 5.67 , but teh chi sqaure critical at α = 0.05 and v = 24 is 36.415 , i do n't have enough evidenvce to reject H0 , H0 = 7.2 H1= <7.2 , But the ans provided is REJECT H0 , why ? I think the ans provided is incorrect , correct me if i am wrong .