There are four cities (City A, City B, City C and City D) in a country. The average life expectation in these cities are 67.7, 72.3, 85.6 and 59.2, respectively. Moreover, there are 153 residents in City A, 275 in City B, 179 in City C and 277 in City D. Calculate the average life expectancy in this country. Interpret and compare the average life expectancies of four cities and the country.

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There are four cities (City A, City B, City C and City D) in a country. The average life expectation in these cities are 67.7, 72.3, 85.6 and 59.2, respectively. Moreover, there are 153 residents in City A, 275 in City B, 179 in City C and 277 in City D.

  1. Calculate the average life expectancy in this country.

  2. Interpret and compare the average life expectancies of four cities and the country.

***The answer should be very detailed and clear, THANK YOU!!!

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