Answer:
3.166
Step-by-step explanation:
It is not fully done but I put it to the thousandths if you want full answer, it is 3.16666667
Answer:
No
Step-by-step explanation:
You can only have the same denominator
Example:
2 3 5
- + - = -
9 9 9
Answer:
The predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.
Step-by-step explanation:
The least square regression line is used to predict the value of the dependent variable from an independent variable.
The general form of a least square regression line is:

Here,
<em>y</em> = dependent variable
<em>x</em> = independent variable
<em>α</em> = intercept
<em>β</em> = slope
The regression line to predict the life expectancy of men in a country from the life expectancy of women in that country is:

Compute the life expectancy of men in a country in which the life expectancy of women is 70 years as follows:


Thus, the predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.
D, because the sum is no more than 28 so it could be equal or less than.