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Chapter 2: Q55. (page 95)

Use the table that shows the life expectancy for people born in various years.

Predict the life expectancy of a person born in 2010

Short Answer

Expert verified

The life expectancy of a person in the year2010will be about79years.

Step by step solution

01

Step-1 –Prediction equation.

The prediction equation of life expectancy of a person is y=0.18x+67.9

02

Step-2 – Determine the value of x.<

The difference between year 1950 and 2010 is60years.

03

Step-3 – Solve for life expectancy of a person born in 2010

Put 60 for x into y=0.18x+67.9.

y=0.18x+67.9y=0.18(60)+67.9y=78.7

Therefore, the model predicts that the life expectancy of a person in the year2010will be about 79years.

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