I made two questions wrong. One is :

1. 

A company opened this past year. They have a 24 hour customer service department. The company is looking to reduce costs and is considering closing its customer service department between the hours of midnight at 5am. Before making this decision, they want to gather some information about the usage of this seNice during these hours. They pull the data from the number of calls to customer service for each day since the company began. Number of Calls to Cust Sen/ice Number of Days 0-14 32 1529 64 3044 58 4559 46 6074 68 7589 32 What is the standard deviation of the number of calls to customer service? Answer: 23.3252 X The correct answer is: 23.2863 The United Nations has a variety ofjob vacancies open throughout the year. Eachjob requires different years of experience. The table below shows the number of applicants the UN received in from random month in the last year based on the different required years of experience. Required experience # of (yea rs) jobs 650 786 507 329 291 57 10 180 What is the variance of the number of years of required experience for these jobs? mLH-b-LUNO The correct answer is: 6.5545