The quality-control manager of a candy company wants to discover whether a filling machine overor underfills 16-ounce bags randomly. The following data represent the filling status of 18 consecutive bags:

A A A A A R R R A A A A A A A A A A

A bag is rejected (R) if it is either overfilled or underfilled and accepted (A) if it is filled according to specification. Test the randomness of the filling machine in the way that it over- or underfills at the α = 0.05 level of significance.