In a large department store, the owner wishes to see whether the number of shoplifting incidents per day will change if the number of uniformed security officers is doubled. A random sample of 7 days before security is increased and 7 days after the increase shows the number of shoplifting incidents.

Is there enough evidence to support the claim, at \(\alpha=0.05\), that there is a difference in the number of shoplifting incidents before and after the increase in security?

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Number of shoplifting incidents Day Before After Monday Tuesday Wednesday Thursday Friday Saturday Sunday 12 723652 5 3 4 3 1 6 4