Write claim mathematically and id null and alternate hypothesis, find the critical values and id the rejection regions, find the standardized test statistic, and decide whether to reject or fail to reject the null hypothesis.
A medical researcher estimates that no more than 55% of US adults eat breakfast every day. In a random sample of 250 US adults, 56.4% say that they eat breakfast every day. At 0.01 level of significance, is there enough evidence to reject the researchers claim?