Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE bank ( no_of_customers INTEGER, state VARCHAR )

### Question ###
Find the average number of customers in all banks of Utah state.

### Accurate SQL ###

SELECT AVG(no_of_customers) FROM bank WHERE state = 'Utah'