The following are the number of customers a restaurant served for lunch on 15 weekdays: 50 49 55 64 59 60 64 59 61 46 62 59 55 66 60 The restaurant manager claims that the population standard deviation for the served customers is equal to 4.4. A company executive wants to test this claim, at the 10% significance level, what should the conclusion be? (1) Critical Values (Round off to 3 decimal places): (2) Test Statistic (Round off to 2 decimal places): (3) Conclusion: (Type 'Reject HO' or 'Fail to Reject HO')