Urgent please help

I 5. A research study is conducted to examine if allowing retaii staff to access their mobile phones at work is associated with lower staff productivity? To study this question, the researcher takes a sample of 300 workers in at several retail stores and measures their access (in 4 different categories) and then their productivity as measured by staff performance appraisals. The following tables show the results (6 marks). .Standard deviation Mean Performance No use of mobile phones allowed at all Access allowed on breaks only Access anytime for emergencies but' 1n the manager' s ofce only No restrictions on mobile phone access while at work Total Interpret these results and conclude whether or not access to the internet at work is _ associated with lower staff productivity. a