QUESTION IMAGE
Question
read the following description of a data set. a medical student reads that with enough sun exposure, the human body can manufacture vitamin d3. this sounds too amazing to be true, so he decides to test it out. over the next few weeks, he spends a varying number of hours in the sun, x. at the end of each week, he measures the concentration of vitamin d3 in his blood (in nanograms per milliliter), y. the least squares regression line of this data set is: y = 9.732x + 47.386 what concentration of vitamin d3 does this line predict if the student spends 8.2 hours in the sun per week? round your answer to the nearest thousandth. nanograms
Explicación:
Paso 1: Identificar la ecuación de la recta de regresión
La ecuación es $y = 9.732x+47.386$.
Paso 2: Sustituir el valor de $x$
Sustituimos $x = 8.2$ en la ecuación: $y=9.732\times8.2 + 47.386$.
Paso 3: Realizar los cálculos
$9.732\times8.2=79.8024$, luego $y=79.8024 + 47.386$.
$y=127.1884$.
Paso 4: Redondear el resultado
Redondeando a la milésima más cercana, $y = 127.188$.
Respuesta:
127.188
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Explicación:
Paso 1: Identificar la ecuación de la recta de regresión
La ecuación es $y = 9.732x+47.386$.
Paso 2: Sustituir el valor de $x$
Sustituimos $x = 8.2$ en la ecuación: $y=9.732\times8.2 + 47.386$.
Paso 3: Realizar los cálculos
$9.732\times8.2=79.8024$, luego $y=79.8024 + 47.386$.
$y=127.1884$.
Paso 4: Redondear el resultado
Redondeando a la milésima más cercana, $y = 127.188$.
Respuesta:
127.188