A study took a random sample often married couples, and asked the husband's and wife's age. The scatterplot shows the associatio
n between the ages of the husbands and wives. Not surprisingly, older husbands tend to have older wives, so the data has a positive linear association. A researcher finds that the least squares regression equation for this relationship is ŷ= 0.89 x + 2.62.
Suppose you interview a married man who has lived to the ripe old age of 100, and still married to his wife. using the least squares regression equation, predict his wife's age.
A. 100
B. 89
C. 91.62
D. 86.38
—my answer is option (c.) 91.62
Any reviews would be much appreciated...
Suppose you interview a married man who has lived to the ripe old age of 100, and still married to his wife. using the least squares regression equation, predict his wife's age.
A. 100
B. 89
C. 91.62
D. 86.38
—my answer is option (c.) 91.62
Any reviews would be much appreciated...
2 answers:
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Answer:
Step-by-step explanation:
(a). = x ( 2x + 1 ) = <em>2x² + x</em>
(b). = 2( 2x + 1 )( 5x + 3 ) = <em>20x² + 22x + 6</em>
(c). = 20x² + 22x + 6 - ( 2x² + x ) =
( 20x² - 2x² ) + ( 22x - x ) + 6 =
<em>18x² + 21x + 6</em>
A rational number is a number that can be written in form a/b where a and b are integers and b is not eual to 0
simplify eacy
we get
is irrational
since we can't write as a rational number, the entire phrase is irrational
anwer is irrational
simplify eacy
we get
since we can't write
anwer is irrational