A random sample of the average debt (in dollars) at graduation from 24 of the top 100 public colleges and universities is listed below.   16,012 15,784 16,597 18,105 12,665 14,734 17,225 16,953 15,309 15,297 14,437 14,835 13,607 13,374 19,410 18,385 22,312 16,656   a- Is there sufficient evidence at the 10% significance level to conclude that the population mean debt at graduation is less than $18,000? b- What is the required conditions for the statistical test in part (a)?

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A random sample of the average debt (in dollars) at graduation from 24 of the top 100 public colleges and universities is listed below.

 

16,012 15,784 16,597 18,105 12,665 14,734

17,225 16,953 15,309 15,297 14,437 14,835

13,607 13,374 19,410 18,385 22,312 16,656

 

a- Is there sufficient evidence at the 10% significance level to conclude that the population mean debt at graduation is less than $18,000?

b- What is the required conditions for the statistical test in part (a)?

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