Suppose in a representative sample of adult Americans ages 26 to 32 years, 28% indicated that they owned a fitness band that kept track of the number of steps walked each day and their daily activity levels. Suppose that the sample size was 300. Is there convincing evidence that more than one-quarter of all adult Americans in this age group own a fitness band? Test the relevant hypotheses using a significance level of 0.05. (a) State the appropriate null and alternative hypotheses