A report on health care in the US said that 28% of Americans have experienced times when they haven't been able to afford medical care. A news organization randomly sampled 801 black Americans, of whom 304 reported that there had been times in the last year when they had not been able to afford medical care. Does this indicate that this problem is more severe among black Americans? Was your test upper tail, lower tail, or two-tail? Explain why you chose that kind of test in this situation