Suppose that scores on a standardized test in mathematics taken by students from large and small high schools are N(mX, s2 ) and N(mY, s2 ) respectively, where s2 is unknown.

Suppose that scores on a standardized test in mathematics taken by students from large and small high schools are N(mX, s2 ) and N(mY, s2 ) respectively, where s2 is unknown. A random sample of n = 16 students from large high schools yielded an average and standard deviation of 81.31 and 7.8 respectively. A random sample of n = 16 students from small high schools yielded an average of 78.61 and sample standard deviation of 7.0. Find a 95% confidence interval for the difference of the population means.00 wordsConsumer mathematicsAdvertisements for no interest no money down and no payments for a specified amount of time are all around us. Consumers are drawn to these deals because on the surface they appear to offer an advantage and provide financial relief for a specified amount of time.What are some positive and negative factors surrounding this type of financing? How does interest factor into the overall equation?Your initial posting should be 500 words and must be submitted by midnight Thursdayof this week.By Sunday of this week respond to two or more of your classmates in one of their postings in any of the following ways:

 

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