A company that cans soup listed the number of milligrams of sodium as 950 mg per serving. A consumer's group is concered that the soup contains more...

A company that cans soup listed the number of milligrams of sodium as 950 mg per serving. A consumer's group is concered that the soup contains more sodium that what is listed on the can. A sample of 30 cans had a mean sodium content of 975mg per serving and a sample standard deviation of 60mg. Do the cans contain more than 950 mg of sodium per serving listed on the label?