A regression of birth weight on the mothers’ estriol level is shown below:Birth

Question

A regression of birth weight on the mothers’ estriol level is shown below:Birth weight (g) = 2149 + 0.61*(estriol level). Which of the following is FALSE?

One baby’s birth weight is 2900 g and the mother’s estriol level is 10. Its residual is about 1.

It is estimated that for every additional unit of estriol level, the baby’s birth weight increases by about 0.6.

If one mother’s estriol level is 15 mg/24hr, then it is estimated that baby’s birth weight is about 2158 g.

It is estimated that for the person with zero estriol level, the baby’s birth weight is about 2149 g.

If one baby’s birth weight is 2153 g, then this equation indicates that this mother’s estriol level is about 5.8 mg/24hr.

One baby’s birth weight is 2900 g and the mother’s estriol level is 10. Its residual is about 1.

It is estimated that for every additional unit of estriol level, the baby’s birth weight increases by about 0.6.

If one mother’s estriol level is 15 mg/24hr, then it is estimated that baby’s birth weight is about 2158 g.

It is estimated that for the person with zero estriol level, the baby’s birth weight is about 2149 g.

If one baby’s birth weight is 2153 g, then this equation indicates that this mother’s estriol level is about 5.8 mg/24hr.

Explanation / Answer

the regreesion equation = y = 2149 +0.61x

now here the wrong statement is = One baby’s birth weight is 2900 g and the mother’s estriol level is 10

as this cannot be possible with the above equation

as if the estirol level = 10

then the weight = y = 2149 +0.61*1 = 2155.1

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