Each day, the United States Customs Service has historically intercepted about $28 Million in contraband goods being smuggled into the country with a standard deviation of \$16 Million per day. On 64 randomly chosen days in 2002 , the U.S. Customs Service intereepted an average of $30.3 Million in contraband goods. Does the sample indicate (at a 5% level of significance), that the Customs Commission should be concemed that smuggling has increased above its historic level?