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Math · Statistics And Probability
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about a mean. Submit Quiz This Question: 1 pt 1 of 5 This Quiz: 5 pts possible Question Help 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 a credit score over 700 considered to be a quality credit risk. According to a survey, the mean credit score is 706.7, 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 38 high-income individuals and found the sample mean credit score to be T24.9 with a standard deviation of 83 2 Conduct the appropriate test to determine if high-income individuals have higher credit scores at the α: 0 05 level of significance. State the null and altermative hypotheses (Type integers or decimals. Do not round.) Identify the t-statistic. o- (Round to two decimal places as needed) Identify the P-value P-value- (Round to three decimal places as needed ) Make a conclusion regarding the hypothesis Fail to reject the null hypothesis. There is not sufficient evidence to claim that the mean credit score of high-income ndividuals is greater than is is not
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