Comparing the means of two population

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1) The mean of the twenty male IQ scores is 115. Test the hypothesis that the mean of female IQ scores is less than 115. Note: This test is not comparing the mean IQ of females to that of males, it is simply using 115 as a comparison value. In the next chapter you will learn how to compare the means of two population. Use a 0.05 level of significance.

2) Test the hypothesis that the standard deviation of the price of 500 KWH of electricity is $1.25. Use the 2000 data.

3) In each year of data, which month exhibits the highest price per 500 KWH? Can you think of reasons why?

Reference no: EM1390258

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