Two companies, Alpha and Beta, recorded the time (in minutes) their employees spent on a specific task. The table shows the recorded times for seven employees from each company.
Each column shows time in minutes
| 1 | 2 | 3 | 4 | 5 | 6 | |
|---|---|---|---|---|---|---|
| Alpha | 15.2 | 16.1 | 14.8 | 17.0 | 15.5 | 16.5 |
| Beta | x | 15.8 | 16.3 | 15.0 | 16.8 | 15.4 |
The mean time for Beta's employees is minutes greater than the mean time for Alpha's employees. What is the value of ?
