Question

# A credit score measures a​ person's creditworthiness. Assume the average credit score for Americans is 709....

A credit score measures a​ person's creditworthiness. Assume the average credit score for Americans is 709. Assume the scores are normally distributed with a standard deviation of 53. ​a) Determine the interval of credit scores that are one standard deviation around the mean. ​b) Determine the interval of credit scores that are two standard deviations around the mean. ​c) Determine the interval of credit scores that are three standard deviations around the mean. ​a)The interval of credit scores that are one standard deviation around the mean ranges from nothing to nothing. ​(Type integers or decimals. Use ascending​ order.) ​ b)The interval of credit scores that are two standard deviations around the mean ranges from nothing to nothing. ​(Type integers or decimals. Use ascending​ order.) ​c)The interval of credit scores that are three standard deviations around the mean ranges from nothing to nothing. ​(Type integers or decimals. Use ascending​ order.)

Given that

mean = 709

and standard deviation (sigma) = 53

(A)  interval of credit scores that are one standard deviation around the mean is given as

(B)  interval of credit scores that are two standard deviation around the mean is given as

(C)  interval of credit scores that are three standard deviation around the mean is given as

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