A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 850, with credit score over 700 considered to be a quality credit risk. According to a survey, the mean credit score is 701.5. A credit analyst wondered whether high-income individuals (incomes in excess of $100,000 per year) had higher credit scores. He obtained a random sample of 45 high-income individuals and found the sample me credit score to be 718.4 with a standard deviation of 83.7. Conduct the appropriate test to determine if high-income individuals have higher credit scores at the a = 0. level of significance. . . . State the null and alternative hypotheses. Ho: H H1 : H (Type integers or decimals. Do not round.) es ibr tio