(a) State the null and alternative hypotheses and (b) state whether the test of hypothesis will be a two-tailed test, a right-tailed test, or a left-tailed test.
A study of 500 randomly selected adults in the United States yielded an average of 2400 calories consumed per day, with a standard deviation of 930 calories. Prior to the study, the claim was made that the true mean caloric intake of all adults in the United States is no more than 2300 calories per day. Test the claim.