Question

1) The scatterplot displays the relationship between husbands' and wives' ages in a random sample of 170 married couples in Britain, where both partners' ages are below 65 years. The regression equation is y= 1.5740 0.9112x 60- res 60 Husband's age in years) (a) Describe the relationship between the husband's age and the wife's age. Your description should include direction, form, and strength. Solution to (a): (b) Identity the slope of the regression equation, and write a sentence to interpret the exact contextual meaning of that value Solution to b le identity the y-intercept of the repression equation, and write a sentence to interpret the exact, contextual meaning of that point Solution to c (d) Do you trust this regression equation to make any accurate predictions of the wife's age based on the husband's age? Explain why or why not

Answer 1

Page Girn that cutterplet ryness of age of husbands and wives line is 1.5740 0.9112X DAX Bern the scatterplot see that the corelation between age of husbands und is positive Correlation and Canela hen, we can also decide the direction of conelahan with the help of estmakd velue of slope of the regression line. of slope (6) Rositive then there is Positive Correlation eind it slope (bo), is nagrine than there negative correlation b) por Ô 2 slope o 9112 represent the age of husbands represend age of wir's Age of wires. is depends on the age of husbands of change in the age of husbands then age Change in wire's with the sale o 9112 gf cre year ello intercept In case of (X=o) â 1,5740 initial when then the age of husbands is zero wire's is age of 1.574 years dmy we 7= 1.5740 + 09/12 X from ean O Can predict the age of wiress age of husband. but is not alusrate age at incluse Sowe than is the are preand the acurate age withouse on the if t ý=0 Ahs fcs Scanned with CamScanner