2. Suppose the following is the true population model of the effect of mother'ssmoking on birth weight in ounces: birthweight_in_oz = a+ Bdailycigarettes + u,and that the average birth weight is 120 oz and on average mothers smoke 1cigarette per day. If your estimate of Bis -1, what must your estimate of a be?а. 120b. 121с. 113d. 119

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Asked Oct 24, 2019
2. Suppose the following is the true population model of the effect of mother's
smoking on birth weight in ounces: birthweight_in_oz = a+ Bdailycigarettes + u,
and that the average birth weight is 120 oz and on average mothers smoke 1
cigarette per day. If your estimate of Bis -1, what must your estimate of a be?
а. 120
b. 121
с. 113
d. 119
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2. Suppose the following is the true population model of the effect of mother's smoking on birth weight in ounces: birthweight_in_oz = a+ Bdailycigarettes + u, and that the average birth weight is 120 oz and on average mothers smoke 1 cigarette per day. If your estimate of Bis -1, what must your estimate of a be? а. 120 b. 121 с. 113 d. 119

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Step 1

Given information:

The model of the effect of mother’s smoking on birth weight is birthweight_in_oz=α+β dailycigarettes+u.

Step 2

Estimate of α:

The average birth weight is 120 oz.

Average smoke by mothers is 1 cigarette per day.

The estimate β is −1.

Substitute the values in t...

120-α+(-1)(1)
α-120+1
121
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120-α+(-1)(1) α-120+1 121

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