The expected number of daily customers in a shop, before the pandemic, was 10. After the pandemic, the shop owner is interested in checking if the expected number of daily customers has decreased. For this purpose, the shop owner collects data on the number of daily customers for a month and calculates the average. The average number of daily customers is found to be 8. Based on this information, What can be concluded about the expected number of daily customers after the pandemic?
1) The expected number of daily customers has decreased by 2.
2) The expected number of daily customers has increased by 2.
3) The expected number of daily customers has remained the same.
4) The expected number of daily customers cannot be determined based on the given information.