Question

In a study of the relationship between marble ownership and household income, Jojo Who interviewed a simple random sample of 330 Who-Households, and generated the following summary statistics: \bar{x} = 3.8 \quad s_x = 0.8 \bar{y} = 13.4 \quad s_y = 3.2 \quad r_{xy} = 0.775 where $x_i$ = monthly income of the $i^{th}$ household, measured in $1000s. $y_i$ = weight of marbles owned by $i^{th}$ household, measured in lbs. Using these statistics to find the regression equation for predicting marble weight from income, the estimated mean weight of marbles owned by all Who-households with monthly incomes of $5000 is... $\approx$ 17.12 lbs $\approx$ 13.4 lbs $\approx$ 11.56 lbs $\approx$ 15.5 lbs

          In a study of the relationship between marble ownership and household income, Jojo Who interviewed a simple random sample of 330 Who-Households, and generated the following summary statistics:
\bar{x} = 3.8 \quad s_x = 0.8
\bar{y} = 13.4 \quad s_y = 3.2 \quad r_{xy} = 0.775
where
$x_i$ = monthly income of the $i^{th}$ household, measured in $1000s.
$y_i$ = weight of marbles owned by $i^{th}$ household, measured in lbs.
Using these statistics to find the regression equation for predicting marble weight from income, the estimated mean weight of marbles owned by all Who-households with monthly incomes of $5000 is...
$\approx$ 17.12 lbs
$\approx$ 13.4 lbs
$\approx$ 11.56 lbs
$\approx$ 15.5 lbs

In a study of the relationship between marble ownership and household income, Jojo Who interviewed a simple random sample of 330 Who-Households, and generated the following summary statistics:
x̅ = 3.8 sx = 0.8
y̅ = 13.4 sy = 3.2 rxy = 0.775
where
xi = monthly income of the i^th household, measured in 1000s.yi= weight of marbles owned byi^thhousehold, measured in lbs.
Using these statistics to find the regression equation for predicting marble weight from income, the estimated mean weight of marbles owned by all Who-households with monthly incomes of5000 is...
≈ 17.12 lbs
≈ 13.4 lbs
≈ 11.56 lbs
≈ 15.5 lbs

Added by Lynn D.

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