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To perform two sample hypothesis testing using normal distribution.

A study was conducted on the annual incomes of corporate trainers in the state of New York in metropolitan areas having a population less than 100,000 and in metropolitan areas having a population over 500,000. Some sample statistics are:

Sample Statistic	Population less than 100K	Population more than 500K
Sample Size	45	60
Sample Mean	$31,290	$31,330
Sample SD	$1,060	$1,900

Test hypothesis that the annual incomes of corporate trainers in areas of more than 500,000 are significantly more than those in areas of less than 100,000. Use the 5 percent level of risk.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M922283

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